Home Assistant client on MacOS has many rendering problems

Hi all!
I hope this is the right category for my question. The home assistant server is running fine in a virtualbox on an old mac mini. I have a problem with the HomeAssistant client on another Mac. As soon as I start scrolling, the new content is displayed only partially or not at all. The first image below should what that looks like.
In other cases, some content is rendered over something else, like in the second image.
Am I the only one with this problem? I have not found anything about it on google or this board.
Any help appreciated.
Mark

Example 1:

Example 2:
See my reply (as a new user I can only embed one image)

Example 2: