It seems like I need to create another user to see the "switch user" option.

Probably last question before I try to reproduce the issue: do you actually need to change a user to see the rearrangement? I mean, if you choose "switch user", and then choose the same user, does it still re-arrange?

A couple of questions:

• How is the "switch user" step done? Where do you choose that option? Do I actually need more than one user to reproduce the issue? Does clicking "Win+L" and logging back in causes reordering, too?
• If you reset all of the tweaker's options to their default, does the reordering still happen?
• Is the issue specific to Firefox?
• Does the reordering happen only within button groups (e.g. shuffling the Firefox window), or between button groups too (e.g. shuffling the Firefox, Notepad, and Word)?

Why is it marked as a bug? Is it caused by 7+ Taskbar Tweaker, i.e. do you only see the issue when the tweaker is running?

Currently that's not possible with 7+ Taskbar Tweaker. I tried to implement this once, but it turned out clumsy and confusing.

That's possible with 7+ Taskbar Numberer. See here:

https://superuser.com/a/916838

What's the issue? Please provide more information.

Please check if that's the bug you're having:

https://tweaker.userecho.com/topics/116-thumbnails-not-displaying/#comment-779

Does the issue happen only when 7+ Taskbar Tweaker is running? What do you mean by "don't respond"? Which options are you using with 7+ Taskbar Tweaker?

It's not really related to the taskbar, so it's unlikely to be implemented by 7+ Taskbar Tweaker.

That's already possible with the Mouse Button Control advanced options. Refer to the help file, and let me know if you need help with it.