Please try the newly released beta version, v5.14.1.4, and let me know whether it works. It can be downloaded here. If all is well, I'll release a non-beta version with the fix in a couple of days.

Then it sounds like an issue with the app. Perhaps it destroys its window on logout, and creates a new one on logon, so it's created at the end.

And you're welcome :)

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.