I'm running Windows 11 Pro 21H2. I activated Windows Sandbox and pinned it (C:\Windows\System32\WindowsSandbox.exe) to the taskbar. Now, whenever I run Windows Sandbox, another icon of it appears in the taskbar. So, I have two icons, one for the program, another for the instance.
How do I prevent Sandbox from creating the instance icon? I know it can be done because I saw it on another computer (not mine).
I found the following related links. Both didn't work for me.
Duplicate icons on taskbar in IntelliJ – Windows 10
Some taskbar pinned icons are duplicated when an instance of the application is running