diff --git a/js/bootstrap-select.js b/js/bootstrap-select.js
index 9f1390c..8827de4 100644
--- a/js/bootstrap-select.js
+++ b/js/bootstrap-select.js
@@ -3434,6 +3434,19 @@ class Selectpicker {
     this.element.classList.add('mobile-device');
   }
 
+  resetMenuData () {
+    this.selectpicker.main.data = [];
+    this.selectpicker.main.elements = [];
+    this.selectpicker.main.hasMore = false;
+    this.selectpicker.search.data = [];
+    this.selectpicker.search.elements = [];
+    this.selectpicker.search.hasMore = false;
+    this.selectpicker.current.data = this.selectpicker.main.data;
+    this.selectpicker.current.elements = this.selectpicker.main.elements;
+    this.selectpicker.current.hasMore = false;
+    this.selectpicker.isSearching = false;
+  }
+
   refresh () {
     var that = this;
     // update options if data attributes have been changed
@@ -3444,6 +3457,7 @@ class Selectpicker {
       this.render();
       this.buildList();
     } else {
+      this.resetMenuData();
       this.fetchData(function () {
         that.render();
         that.buildList();
diff --git a/tests/e2e/tags-editor.spec.js b/tests/e2e/tags-editor.spec.js
index 2f3bba9..b2c3473 100644
--- a/tests/e2e/tags-editor.spec.js
+++ b/tests/e2e/tags-editor.spec.js
@@ -134,6 +134,44 @@ test.describe('Tags-style live search editor', () => {
     await expect(optionAnchor(picker, 'DELTA')).toBeVisible();
   });
 
+  test('does not duplicate selected tags after repeated refresh calls', async ({ page }) => {
+    const id = await page.evaluate(() => {
+      document.body.innerHTML += `
+        <select id="tags-editor-refresh" multiple>
+          <option value="one" selected>Option 1</option>
+          <option value="two" selected>Option 2</option>
+          <option value="three">Option 3</option>
+        </select>
+      `;
+
+      new Selectpicker('#tags-editor-refresh', {
+        liveSearch: true,
+        showSelectedTags: true,
+        openOptions: true
+      });
+
+      return 'tags-editor-refresh';
+    });
+
+    const picker = widget(page, id);
+
+    await expect(picker.locator('> .bs-selected-items-external .bs-selected-item')).toHaveCount(2);
+    await expect(picker.locator('.filter-option-inner-inner')).toHaveText('2 items selected');
+
+    await page.evaluate((selectId) => {
+      const instance = Selectpicker.getInstance('#' + selectId);
+      instance.refresh();
+      instance.refresh();
+    }, id);
+
+    await expect(picker.locator('> .bs-selected-items-external .bs-selected-item')).toHaveCount(2);
+    await expect(picker.locator('> .bs-selected-items-external .bs-selected-item')).toContainText(['Option 1', 'Option 2']);
+    await expect(picker.locator('.filter-option-inner-inner')).toHaveText('2 items selected');
+    await expect.poll(async () => page.evaluate((selectId) => {
+      return Array.from(document.getElementById(selectId).selectedOptions).map(option => option.value);
+    }, id)).toEqual(['one', 'two']);
+  });
+
   test('supports checkbox selection indicators and search placeholder fallback', async ({ page }) => {
     const id = await page.evaluate(() => {
       document.body.innerHTML += `