Hi, does it only move while 7+ Taskbar Tweaker is running?

Sorry, but I don't speak Chinese. Use English and attach screenshots or video recordings to clarify what you mean.

Closing in favor of this issue which has more details and a solution:

https://tweaker.userecho.com/topics/1254-restoring-the-standard-menu-doesnt-work-on-newer-7tt-versions-with-startisback

Is 7+ Taskbar Tweaker still running? Could it be that it's killed, maybe by an antivirus?

The reason for the incompatibility is that both 7+ Taskbar Tweaker and StartIsBack hook the same function, and one of the hooks takes over the other. I tried to revert the relevant portion of the changes from v5.11.3, please try beta v5.14.1.2 which I just released and let me know whether it solves the incompatibility.

You can get old versions of the tweaker here:

https://www.dropbox.com/sh/mcbychsh0xc1dvu/AAC7NwQTQ-tOTNL2BUZ_CwUua?dl=0

You can configure middle click to minimize the window. 

There was a problem calling GetProcAddress. Generally that shouldn't happen, but I remember seeing this issue when 7+ Taskbar Tweaker was running in compatibility mode. Please make sure that all compatibility options are off. If no compatibility options are enabled, my next guess would be a conflict with another program, such as another customization tool or your antivirus.

Yes, it's called win7appid as it was created for Windows 7 back when there was no Windows 10, but it's relevant for all Windows versions not older than Win7.