diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6270420..ae56000 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.11.5 — 2026-10-27
+
+- Fixed: the Environments tab of the settings window showed every row twice (two loads at once: choosing the
+  connection and opening the tab). Only the last load fills the table now.
+- Environments: a column "Where from" (and a tooltip) with where each row comes from - the TFVC path and its last
+  changeset, the repository and its project, or the release, stage, date and branch it was deployed from - so a "Main"
+  or "Release" can be told from another. The terminal menu shows it under each row; `adolens setup --detect --sources`
+  prints it.
+
 ## 0.11.4 — 2026-10-27
 
 The environments are set the same way in the window, the terminal and the installer.
diff --git a/src/AdoLens/AdoLens.csproj b/src/AdoLens/AdoLens.csproj
index 7fb6ab3..1de9ba8 100644
--- a/src/AdoLens/AdoLens.csproj
+++ b/src/AdoLens/AdoLens.csproj
@@ -25,7 +25,7 @@
     <AssemblyTitle>ADO Lens for Azure DevOps</AssemblyTitle>
     <Description>Azure DevOps (work items, boards, wiki, Git and TFVC, pipelines) served to AI assistants over MCP</Description>
     <Copyright>Copyright © 2026 WillowDev</Copyright>
-    <Version>0.11.4</Version>
+    <Version>0.11.5</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/AdoLens/Cli.cs b/src/AdoLens/Cli.cs
index e176385..307ccc3 100644
--- a/src/AdoLens/Cli.cs
+++ b/src/AdoLens/Cli.cs
@@ -602,6 +602,8 @@ async Task<int> SetupUnattendedAsync()
             var lines = new List<string>();
             var (effective, source) = await EnvironmentFlow.EffectiveAsync(session, project, default);
             if (effective.Count > 0) lines.Add($"existing\t{string.Join(" -> ", effective.Values)}\t{source}");
+            // --sources adds where each comes from (the installer reads three columns only).
+            else if (cl.Flag("sources")) lines.AddRange((await EnvironmentFlow.DetectWithSourcesAsync(session, project, default)).Select(d => $"row\t{d.Key}\t{d.Guess}\t{d.Source}"));
             else lines.AddRange((await EnvironmentFlow.DetectAsync(session, project, default)).Select(d => $"row\t{d.Key}\t{d.Guess}"));
             if (cl.Opt("out") is { } file)
             {
@@ -678,7 +680,7 @@ async Task EnvironmentsAsync(string name, Session session, string project, bool
             Console.WriteLine(Ui.T($"{name} / {project}: code goes {string.Join(" -> ", effective.Values)} ({source}).",
                                    $"{name} / {project}: kod trafia kolejno na {string.Join(" -> ", effective.Values)} ({source})."));
         if (effective.Count > 0 && !change) return;
-        var found = (await EnvironmentFlow.DetectAsync(session, project, default)).Where(d => !effective.ContainsKey(d.Key)).ToList();
+        var found = (await EnvironmentFlow.DetectWithSourcesAsync(session, project, default)).Where(d => !effective.ContainsKey(d.Key)).ToList();
         if ((effective.Count == 0 && found.Count == 0) || !interactive)
         {
             Console.WriteLine(Ui.T($"{name} / {project}: no release stages or long-lived branches found - Claude will ask when needed.",
@@ -716,8 +718,10 @@ async Task EnvironmentsAsync(string name, Session session, string project, bool
         if (found.Count > 0)
             Console.WriteLine(Ui.T("Found - type the name as people say it (e.g. UAT (sbx03)), '+' takes the hint, Enter skips:",
                                    "Znalezione - wpisz nazwę, jakiej używacie (np. UAT (sbx03)), '+' przyjmuje podpowiedź, Enter pomija:"));
-        foreach (var (key, hint) in found)
+        foreach (var (key, hint, from) in found)
         {
+            // Where it comes from: two "Main" or "Release" are told apart by their path or release.
+            if (from.Length > 0) Console.WriteLine($"    ({from})");
             var label = Prompt($"  {key}{(hint is null ? "" : Ui.T($" (looks like {hint})", $" (wygląda na {hint})"))}: ")?.Trim();
             if (label == "+" && hint is not null) map[key] = hint;
             else if (!string.IsNullOrEmpty(label) && label != "+" && label != "-") map[key] = label;
diff --git a/src/AdoLens/CommandLine.cs b/src/AdoLens/CommandLine.cs
index 8745c33..38f08dd 100644
--- a/src/AdoLens/CommandLine.cs
+++ b/src/AdoLens/CommandLine.cs
@@ -13,7 +13,7 @@ public sealed partial class CommandLine
     {
         ["mcp"] = [],
         ["upgrade"] = ["install", "pre"],
-        ["setup"] = ["mode=", "connection=", "detect", "out=", "env=", "scope=", "wizard", "window"],
+        ["setup"] = ["mode=", "connection=", "detect", "out=", "env=", "scope=", "wizard", "window", "sources"],
         ["login"] = ["connection=", "org=", "project=", "team=", "pat-stdin", "pat-env=", "default"],
         ["tests"] = ["connection=", "team=", "detail="],
         ["test-create"] = ["connection=", "file=", "plan=", "suite="],
diff --git a/src/AdoLens/EnvironmentFlow.cs b/src/AdoLens/EnvironmentFlow.cs
index febf086..8302531 100644
--- a/src/AdoLens/EnvironmentFlow.cs
+++ b/src/AdoLens/EnvironmentFlow.cs
@@ -20,15 +20,29 @@ public static class EnvironmentFlow
     /// Release stages and long-lived branches of the project with the code (the connection's code project, when the
     /// code lives elsewhere than the work items) and of <paramref name="project"/> itself.
     /// </summary>
-    public static async Task<List<(string Key, string? Guess)>> DetectAsync(Session session, string project, CancellationToken ct)
+    public static async Task<List<(string Key, string? Guess)>> DetectAsync(Session session, string project, CancellationToken ct) =>
+        (await DetectWithSourcesAsync(session, project, ct)).Select(d => (d.Key, d.Guess)).ToList();
+
+    /// <summary>
+    /// As <see cref="DetectAsync"/>, with where each one comes from ("$/Project/Trunk/Main, last changeset 2026-10-20";
+    /// "release Deploy, stage 1, deployed 2026-10-24 from …"), so two of the same name can be told apart.
+    /// </summary>
+    public static async Task<List<(string Key, string? Guess, string Source)>> DetectWithSourcesAsync(Session session, string project, CancellationToken ct)
     {
+        var sources = new Dictionary<string, List<string>>(StringComparer.OrdinalIgnoreCase);
+        void From(string key, string source)
+        {
+            if (!sources.TryGetValue(key, out var list)) sources[key] = list = [];
+            if (!list.Contains(source)) list.Add(source);
+        }
+        static string Day(DateTime? d) => d?.ToLocalTime().ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture) ?? "?";
         var projects = new[] { session.Config.CodeProject, project }.Where(p => !string.IsNullOrWhiteSpace(p)).Select(p => p!)
             .Distinct(StringComparer.OrdinalIgnoreCase).ToList();
         var keys = new List<string>();
         // Long-lived branches of the repositories in use (a commit in the last half year); feature and work branches are
         // filtered by ProposeFlow. With several repositories each branch is named with its repository ("D365FO:staging"),
         // since the same branch name can mean different environments - or none - in different repositories.
-        var active = new List<(string Id, string Name)>();
+        var active = new List<(string Id, string Name, string Project, DateTime Last)>();
         foreach (var p in projects)
         {
             try
@@ -40,19 +54,24 @@ public static class EnvironmentFlow
                     var last = await session.Client.GetListAsync($"_apis/git/repositories/{id}/commits?searchCriteria.$top=1", ct);
                     if (last.Count > 0 && DateTime.TryParse(Json.Str(Json.Obj(last[0], "committer"), "date"), System.Globalization.CultureInfo.InvariantCulture,
                             System.Globalization.DateTimeStyles.AdjustToUniversal, out var when) && when > DateTime.UtcNow.AddDays(-183))
-                        active.Add((id, Json.Str(repo, "name") ?? id));
+                        active.Add((id, Json.Str(repo, "name") ?? id, p, when));
                 }
             }
             catch (AdoApiException) { } // no Git, or no Code (Read) scope
         }
         var several = active.Count > 1;
-        foreach (var (id, name) in active)
+        foreach (var (id, name, inProject, last) in active)
         {
             try
             {
                 var refs = await session.Client.GetListAsync($"_apis/git/repositories/{id}/refs?filter=heads/&$top=200", ct);
-                keys.AddRange(refs.Select(r => Code.Short(Json.Str(r, "name")) ?? "").Where(n => n.Length > 0 && !n.Contains('/'))
-                    .Select(n => several ? $"{name}:{n}" : n));
+                foreach (var n in refs.Select(r => Code.Short(Json.Str(r, "name")) ?? "").Where(n => n.Length > 0 && !n.Contains('/')))
+                {
+                    var key = several ? $"{name}:{n}" : n;
+                    keys.Add(key);
+                    From(key, Ui.T($"Git: branch {n} of repository {name} ({inProject}; last commit in the repository {Day(last)})",
+                                    $"Git: gałąź {n} repozytorium {name} ({inProject}; ostatni commit w repozytorium {Day(last)})"));
+                }
             }
             catch (AdoApiException) { }
         }
@@ -67,11 +86,13 @@ public static class EnvironmentFlow
                 {
                     var path = Json.Str(b, "path") ?? "";
                     var name = path[(path.LastIndexOf('/') + 1)..];
-                    if (name.Length == 0 || tfvc.Any(t => t.Key.Equals(name, StringComparison.OrdinalIgnoreCase))) continue;
+                    if (name.Length == 0) continue;
                     var last = await session.Client.GetListAsync($"_apis/tfvc/changesets?searchCriteria.itemPath={Uri.EscapeDataString(path)}&$top=1", ct);
                     if (last.Count == 0 || !DateTime.TryParse(Json.Str(last[0], "createdDate"), System.Globalization.CultureInfo.InvariantCulture,
                             System.Globalization.DateTimeStyles.AdjustToUniversal, out var when) || when < DateTime.UtcNow.AddDays(-183)) continue;
-                    tfvc.Add((name, TfvcGuess(name)));
+                    // Two branches with one name (Main in two projects) are one key: ado_trace knows a TFVC branch by its last part.
+                    From(name, Ui.T($"TFVC: {path} (last changeset {Day(when)})", $"TFVC: {path} (ostatni changeset {Day(when)})"));
+                    if (!tfvc.Any(t => t.Key.Equals(name, StringComparison.OrdinalIgnoreCase))) tfvc.Add((name, TfvcGuess(name)));
                 }
             }
             catch (AdoApiException) { } // no TFVC, or no Code (Read) scope
@@ -85,13 +106,18 @@ public static class EnvironmentFlow
                 if (d.When is not { } when || when < DateTime.UtcNow.AddDays(-183)) continue;
                 var branch = Code.Short(d.Branch);
                 var repo = active.FirstOrDefault(a => string.Equals(a.Id, d.Repository, StringComparison.OrdinalIgnoreCase)).Name;
-                keys.Add(d.Branch?.StartsWith("$/", StringComparison.Ordinal) == true || branch is null ? $"{d.Definition}/{d.Stage}"
-                    : several && repo is not null ? $"{repo}:{branch}" : branch);
+                var key = d.Branch?.StartsWith("$/", StringComparison.Ordinal) == true || branch is null ? $"{d.Definition}/{d.Stage}"
+                    : several && repo is not null ? $"{repo}:{branch}" : branch;
+                keys.Add(key);
+                From(key, Ui.T($"release {d.Definition}, stage {d.Stage}: deployed {Day(d.When)}", $"release {d.Definition}, etap {d.Stage}: wdrożony {Day(d.When)}")
+                          + (d.Branch is { } from ? Ui.T($" from {from}", $" z {from}") : "") + $" ({p})");
             }
         var git = TraceQueries.ProposeFlow(keys.Distinct(StringComparer.OrdinalIgnoreCase));
         var order = new[] { "DEV", "UAT", "PROD" };
         return tfvc.OrderBy(t => t.Guess is null ? 3 : Array.IndexOf(order, t.Guess)).ThenBy(t => t.Key, StringComparer.OrdinalIgnoreCase)
-            .Concat(git.Where(g => !tfvc.Any(t => t.Key.Equals(g.Key, StringComparison.OrdinalIgnoreCase)))).ToList();
+            .Concat(git.Where(g => !tfvc.Any(t => t.Key.Equals(g.Key, StringComparison.OrdinalIgnoreCase))))
+            .Select(k => (k.Key, k.Guess, string.Join("; ", sources.GetValueOrDefault(k.Key) ?? [])))
+            .DistinctBy(k => k.Key, StringComparer.OrdinalIgnoreCase).ToList();
     }
 
     /// <summary>A TFVC branch and the branches under it.</summary>
diff --git a/src/AdoLens/SettingsWindow.cs b/src/AdoLens/SettingsWindow.cs
index c0f94ee..53ff2b2 100644
--- a/src/AdoLens/SettingsWindow.cs
+++ b/src/AdoLens/SettingsWindow.cs
@@ -283,6 +283,13 @@ TabPage EnvironmentsPage()
         envGrid.Columns.Add(new DataGridViewTextBoxColumn { Name = "name", HeaderText = Ui.T("Environment, as people say it (empty = skip)", "Środowisko, jak o nim mówicie (puste = pomiń)"), FillWeight = 35 });
         envGrid.Columns.Add(new DataGridViewTextBoxColumn { Name = "hint", HeaderText = Ui.T("Looks like", "Wygląda na"), FillWeight = 12, ReadOnly = true,
             DefaultCellStyle = new DataGridViewCellStyle { ForeColor = SystemColors.GrayText } });
+        // Where a row comes from: two "Main" or "Release" rows are told apart by their path, repository or release.
+        envGrid.Columns.Add(new DataGridViewTextBoxColumn { Name = "source", HeaderText = Ui.T("Where from", "Skąd"), FillWeight = 45, ReadOnly = true,
+            DefaultCellStyle = new DataGridViewCellStyle { ForeColor = SystemColors.GrayText } });
+        envGrid.CellToolTipTextNeeded += (_, e) =>
+        {
+            if (e.RowIndex >= 0 && envGrid.Rows[e.RowIndex].Cells[4].Value is string { Length: > 0 } source) e.ToolTipText = source.Replace("; ", "\n");
+        };
         envConnection.SelectedIndexChanged += async (_, _) => await LoadEnvironmentsAsync(detect: false);
 
         var top = new FlowLayoutPanel { Dock = DockStyle.Fill, AutoSize = true, WrapContents = false };
@@ -346,9 +353,13 @@ void MoveRow(int by)
         envGrid.CurrentCell = row.Cells[0];
     }
 
+    /// <summary>Each load gets a number; only the last one fills the table (two loads at once doubled every row).</summary>
+    int envLoad;
+
     async Task LoadEnvironmentsAsync(bool detect)
     {
         if (envConnection.SelectedItem is not string name) return;
+        var load = ++envLoad;
         UseWaitCursor = true;
         envInfo.Text = detect ? Ui.T("Looking for release stages and branches...", "Szukam etapów release'ów i gałęzi...") : "";
         try
@@ -357,13 +368,15 @@ async Task LoadEnvironmentsAsync(bool detect)
             var session = lens.For(name);
             var project = session.Project(null);
             var (map, source) = await EnvironmentFlow.EffectiveAsync(session, project, default);
+            // Found rows get no name yet, only the hint: with many repositories, saving would otherwise take them all.
+            var detected = detect || map.Count == 0 ? await EnvironmentFlow.DetectWithSourcesAsync(session, project, default) : [];
+            if (load != envLoad) return;   // a newer load is on its way
             envGrid.Rows.Clear();
-            foreach (var (key, label) in map) AddRow(key, label, null);
+            foreach (var (key, label) in map)
+                AddRow(key, label, null, detected.FirstOrDefault(d => d.Key.Equals(key, StringComparison.OrdinalIgnoreCase)).Source);
             var found = 0;
-            // Found rows get no name yet, only the hint: with many repositories, saving would otherwise take them all.
-            if (detect || map.Count == 0)
-                foreach (var (key, guess) in await EnvironmentFlow.DetectAsync(session, project, default))
-                    if (!map.ContainsKey(key)) { AddRow(key, "", guess); found++; }
+            foreach (var (key, guess, from) in detected)
+                if (!map.ContainsKey(key)) { AddRow(key, "", guess, from); found++; }
             FillRepositories();
             var code = session.Config.CodeProject is { } cp && !cp.Equals(project, StringComparison.OrdinalIgnoreCase) ? Ui.T($" (code in {cp})", $" (kod w {cp})") : "";
             envInfo.Text = $"{project}{code}: " + (map.Count > 0 ? Ui.T($"in use: {source}", $"w użyciu: {source}") : Ui.T("no map yet", "brak mapy"))
@@ -378,8 +391,8 @@ async Task LoadEnvironmentsAsync(bool detect)
         finally { UseWaitCursor = false; }
     }
 
-    void AddRow(string key, string label, string? hint) =>
-        envGrid.Rows.Add(EnvMap.RepoOf(key) ?? "", EnvMap.BranchOf(key), label, hint ?? "");
+    void AddRow(string key, string label, string? hint, string? source = null) =>
+        envGrid.Rows.Add(EnvMap.RepoOf(key) ?? "", EnvMap.BranchOf(key), label, hint ?? "", source ?? "");
 
     const int AllRepositories = 0, NoRepository = 1;