quic and dirty fix

client/presentationmgr.ts

@@ -99,6 +99,8 @@ class MainScreen implements PresentationScreen {
 	}
 
 	public async end(): Promise<void> {
+		this.dom_root.style.opacity = "0";
+		await sleep(500);
 	}
 
 	private async show_question(text: string): Promise<void> {
@@ -231,6 +233,7 @@ class IdleScreen implements PresentationScreen {
 	}
 
 	public async start(): Promise<void> {
+		await sleep(10);
 		this.dom_title.style.transform = "translateY(0)";
 		this.dom_title.style.opacity = "1";
 		await sleep(250);