add standalone detection

src/vs/base/browser/browser.ts

@@ -122,6 +122,7 @@ export const isSafari = (!isChrome && (userAgent.indexOf('Safari') >= 0));
 export const isWebkitWebView = (!isChrome && !isSafari && isWebKit);
 export const isIPad = (userAgent.indexOf('iPad') >= 0);
 export const isEdgeWebView = isEdge && (userAgent.indexOf('WebView/') >= 0);
+export const isStandalone = (window.matchMedia('(display-mode: standalone)').matches);
 
 export function hasClipboardSupport() {
 	if (isIE) {

src/vs/workbench/services/keybinding/browser/keybindingService.ts

@@ -345,6 +345,10 @@ export class WorkbenchKeybindingService extends AbstractKeybindingService {
 			return false;
 		}
 
+		if (browser.isStandalone) {
+			return false;
+		}
+
 		if (browser.isFullscreen() && (<any>navigator).keyboard) {
 			return false;
 		}