Why does my bounding box look like this?

[Devin32519626y8u9]

Its partially grey when I select multiple objects. Is this normal?

[Ton Frederiks]

Does it make a difference when you switch between GPU and CPU Preview?

Cmd or Ctrl E

[Ares Hovhannesyan]

Can you share a file to test?

[Kurt Gold]

There have already been complaints about this or similar issues and as far as I remember they were triggered by using the Overprint Preview and/or Pixel Preview. But only on certain machines and no definite pattern why it occurs has been detected.

[Devin32519626y8u9 · Accepted solution]

Thanks for your replies. 

GPU and CPU Preview was greyed out.

Overprint Preview and Pixel Preview didnt change anything.

I just embeded some images, saved, restarted AI, and its back to normal. Im on Mac Studio M1 Max.

[Ares Hovhannesyan]

So thay are raster images.