Hi, it's kind of a weird problem I have pretty much since I started using DF (about 9 months), but didn't figure out it actually was DF that caused that behaviour.
The Problem is occuring in Discord, but DF triggers it, or rather the Alt-Tab part triggers it.
In Discord, I use the hotkey combination "ALT+Middle Mouse Button" to turn on/off my mic. After I Alt-Tabbed this hotkey gets activated by simply pressing the middle mouse button, pressing Alt is no longer needed. As soon as I press Alt again, the hotkey doesn't get activated by middle mouse button alone.
So it feels like after Alt-Tabbing, the Alt button keeps getting pressed by DF until I press it again. I've been going back and forth with the Discord support for weeks now, and just realized the problem goes away completely as soon as I disable the Alt-Tab part of DF.
I tried the Beta as well, so it's on 9.9 and the current Beta.
The last really weird part is: It doesn' get "stored" by games. My Alt-middle mouse button keybinds in any game won't get messed up by this, but Discords still will. That kind of means I send 2 different signals out, the game only gets the middle mouse button, but Discord gets middle mouse button and the Alt key.
Haven't tried it with any other Voice Communication Software yet, I can do that if you want. For now I can just disable that part of DF, but I really don't like the Win11 Alt-Tab, so a Fix would really be appreciated!
If you need anything else I'm happy to give any information you might need.

That's disappointing to hear. Thanks for the response though!