Dock and menu bar not showing on full screen with external mouse
I'm experiencing a weird behavior on MacOS Big Sur with my MacBook Pro. I have an external keyboard and mouse connected by USB in an USB-C hub LMP.
When I have an application in fullscreen and I try to reach the dock or the menu bar by moving my cursor in the top or the bottom with the mouse, nothing happen. If I disconnect the mouse and do the same with the trackpad, all is working fine.
I didn't have this setup with previous version of MacOS, so I don't know if this is a problem with BigSur.
I didn't find thread with a similar issue. Is anyone having an idea how to fix this problem ?
Thank you