Still annoying grey box when using Coherence

This grey box appears on top of my external monitor when in Coherence and it also has some interactions with Coherence windows. Installed latest version today (19/08/2024). Tried rebooting, etc. Nothing. Quite annoying.

 

... and if mac is not attached to an external screen, the grey/weird box is here

 

... it has a weird behaviour

 

UPDATE: after a couple of reboots, the problem (for now) disappeared.