From 60243ae036938532052493b32d1ab421f949dfa9 Mon Sep 17 00:00:00 2001
From: Sean Li <22557931+sean0407@users.noreply.github.com>
Date: Wed, 14 Oct 2026 05:14:38 +0800
Subject: [PATCH] Ignore worker targets when listing window handles

---
 lib/capybara/cuprite/browser.rb |  6 +++++-
 spec/features/driver_spec.rb    | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/lib/capybara/cuprite/browser.rb b/lib/capybara/cuprite/browser.rb
index d127b0c..1aff6f5 100644
--- a/lib/capybara/cuprite/browser.rb
+++ b/lib/capybara/cuprite/browser.rb
@@ -110,7 +110,11 @@ def window_handle
       end
 
       def window_handles
-        targets.keys
+        handles = []
+        targets.each_pair do |id, target|
+          handles << id if target.type == "page"
+        end
+        handles
       end
 
       def within_window(locator = nil)
diff --git a/spec/features/driver_spec.rb b/spec/features/driver_spec.rb
index aad2929..263ba58 100644
--- a/spec/features/driver_spec.rb
+++ b/spec/features/driver_spec.rb
@@ -989,6 +989,26 @@ def create_screenshot(file, *args)
         expect(@driver.window_handles.size).to eq(2)
       end
 
+      it "does not count worker targets as windows" do
+        worker = 'new Worker(URL.createObjectURL(new Blob(["self.onmessage = () => {}"], { type: "text/javascript" })))'
+        @session.visit "/"
+        @session.execute_script(worker)
+        sleep 0.1
+
+        expect(@driver.window_handles.size).to eq(1)
+
+        popup = @session.window_opened_by do
+          @session.execute_script <<~JS
+            const popup = window.open("about:blank")
+            popup.eval('#{worker}')
+          JS
+          sleep 0.1
+        end
+
+        expect(@driver.window_handles.size).to eq(2)
+        @session.within_window(popup) { expect(@session.current_url).to eq("about:blank") }
+      end
+
       context "a new window inherits settings" do
         it "inherits size" do
           @session.visit "/"