diff --git a/src/vs/workbench/contrib/preferences/browser/settingsTreeModels.ts b/src/vs/workbench/contrib/preferences/browser/settingsTreeModels.ts
index 9e2704a79b6..eaf1dfe189a 100644
--- a/src/vs/workbench/contrib/preferences/browser/settingsTreeModels.ts
+++ b/src/vs/workbench/contrib/preferences/browser/settingsTreeModels.ts
@@ -751,8 +751,8 @@ export function inspectSetting(key: string, target: SettingsTarget, languageFilt
 	return { isConfigured, inspected, targetSelector, inspectedLanguageOverrides, languageSelector: languageFilter };
 }
 
-function sanitizeId(id: string): string {
-	return id.replace(/[\.\/]/, '_');
+export function sanitizeId(id: string): string {
+	return id.replace(/[\.\/]/g, '_');
 }
 
 export function settingKeyToDisplayFormat(key: string, groupId: string = '', isLanguageTagSetting: boolean = false): { category: string; label: string } {
diff --git a/src/vs/workbench/contrib/preferences/test/browser/settingsTreeModels.test.ts b/src/vs/workbench/contrib/preferences/test/browser/settingsTreeModels.test.ts
index 98421c6ea63..0fd6956d676 100644
--- a/src/vs/workbench/contrib/preferences/test/browser/settingsTreeModels.test.ts
+++ b/src/vs/workbench/contrib/preferences/test/browser/settingsTreeModels.test.ts
@@ -5,7 +5,7 @@
 
 import assert from 'assert';
 import { ensureNoDisposablesAreLeakedInTestSuite } from '../../../../../base/test/common/utils.js';
-import { settingKeyToDisplayFormat, parseQuery, IParsedQuery } from '../../browser/settingsTreeModels.js';
+import { settingKeyToDisplayFormat, parseQuery, IParsedQuery, sanitizeId } from '../../browser/settingsTreeModels.js';
 
 suite('SettingsTree', () => {
 	test('settingKeyToDisplayFormat', () => {
@@ -329,5 +329,22 @@ suite('SettingsTree', () => {
 			});
 	});
 
+	test('sanitizeId replaces all dots and slashes', () => {
+		assert.deepStrictEqual(
+			[
+				sanitizeId('root.editor.font.size'),
+				sanitizeId('group/subgroup/setting.key'),
+				sanitizeId('no-special-chars'),
+				sanitizeId('single.dot'),
+			],
+			[
+				'root_editor_font_size',
+				'group_subgroup_setting_key',
+				'no-special-chars',
+				'single_dot',
+			]
+		);
+	});
+
 	ensureNoDisposablesAreLeakedInTestSuite();
 });