Thanks, it looks better now!
Although now my UI seems to not follow exactly the position of the camera, always 1-2 pixels behind:
I'm not entirely sure about that myself. I'd have to say to check your scripts as well as your object hierarchy and canvas settings to see if somehow your canvas is being moved by something else.
I couldn't fix it, but the problem doesn't show up in standalone builds, so I'll leave it like that for now. Again thank you for your help !
