diff --git a/assets/src/legacy/switcher-layers-actions.js b/assets/src/legacy/switcher-layers-actions.js
index 320cdacfaf..d521c9c55c 100644
--- a/assets/src/legacy/switcher-layers-actions.js
+++ b/assets/src/legacy/switcher-layers-actions.js
@@ -293,6 +293,8 @@ var lizLayerActionButtons = function() {
                             }
                         );
                     }
+                    $('#theme-selector.open').click();
+                    return false;
                 });
 
                 // Trigger event with the list of mapThemes
@@ -302,7 +304,7 @@ var lizLayerActionButtons = function() {
                     }
                 );
 
-                // Activate first map them on load
+                // Activate first map theme on load
                 if ('activateFirstMapTheme' in lizMap.config.options && lizMap.config.options.activateFirstMapTheme == 'True') {
                     $('#theme-selector li.theme:nth-child(1)').click();
                 }
diff --git a/tests/end2end/playwright/theme.spec.ts b/tests/end2end/playwright/theme.spec.ts
index 100459c4ba..b7445cf758 100644
--- a/tests/end2end/playwright/theme.spec.ts
+++ b/tests/end2end/playwright/theme.spec.ts
@@ -20,6 +20,17 @@ test.describe('Theme', () => {
         // Style
         await page.locator('lizmap-treeview > ul > li:nth-child(2) > div.checked.layer > div.node > div > i').click({force:true});
         expect(await page.locator('#sub-dock select.styleLayer').inputValue()).toBe('style1');
+
+        // The url has been updated
+        const url = new URL(page.url());
+        await expect(url.hash).not.toHaveLength(1);
+        // The decoded hash is
+        // #3.7308717840938743,43.54038574169922,4.017985172062126,43.679557362551954
+        // |group1,Les%20quartiers
+        // |,style1
+        // |1,1
+        await expect(url.hash).toMatch(/#3.730871\d+,43.540385\d+,4.0179851\d+,43.679557\d+\|/)
+        await expect(url.hash).toContain('|group1,Les%20quartiers|,style1|1,1')
     });
 
     test('must display theme2 when selected', async ({ page }) => {
@@ -38,5 +49,16 @@ test.describe('Theme', () => {
         // Style
         await page.locator('lizmap-treeview > ul > li:nth-child(2) > div.checked.layer > div.node > div > i').click({force:true});
         expect(await page.locator('#sub-dock select.styleLayer').inputValue()).toBe('style2');
+
+        // The url has been updated
+        const url = new URL(page.url());
+        await expect(url.hash).not.toHaveLength(0);
+        // The decoded hash is
+        // #3.731213820800494,43.540385230085235,4.0183280116947415,43.679557742508926
+        // |Les%20quartiers|style2|1
+        // |style2
+        // |1
+        await expect(url.hash).toMatch(/#3.731213\d+,43.540385\d+,4.018328\d+,43.679557\d+\|/)
+        await expect(url.hash).toContain('|Les%20quartiers|style2|1')
     });
-});
\ No newline at end of file
+});