Resetting the user interface to the default layout did not resolve this.
If by "ribbon" you mean the browser tree; re-docking it didn't resolve this either.
That's actually buggy as well because: It'll just go missing/off screen:

Or it'll end up in two pieces:

Or dragging the ribbon with my mouse pointer will work and the menu will get moved around but my mouse pointer will be 2 inches away nowhere near the browser tree:
https://youtube.com/shorts/j9ZYrklQuVY?feature=share
Is there a solution to this? Pretty annoying having to click a drop down menu 3-20 times before it finally sticks 50 times a day.
Issue occurs both with mouse and trackpad.
EDIT: OMG I've been dealing with this for a year...
- Time Magazine’s Person of the Year 2006
- Apple M1 Max rMBP A2485 // Latest MacOS // Latest Fusion
- Usually working off files uploaded to Fusion as: Step, STL, SLDPRT. If it matters ask me.