Window contents aren't shown while dragging

Symptoms

While you drag a window of a published app, its contents aren't displayed.

Cause

Option "Show window contents while dragging" is disabled on RDS host and/or local PC.

Resolution

You need to enable option "Show window contents while dragging" in Performance Options on both RDS host and local PC:

1. Open the Start menu;
2. Right-click Computer (or "This PC") → Properties;
3. Click Advanced system settings;
4. Click Performance → Settings;
5. Enable "Show window contents while dragging" and press OK:
   
   Please take into account that this setting is applied per user.