Folder icons of shared groupfolders are buggy

Hello there. I got a bug since many versions that shared items that contain folders have just a strange grey icon instead of a folder.

How to reproduce (but I think that only I have the bug):

  • Create folders in another folder.
  • Share the folder for open access.
  • Open with the given link.

I realised that this only happens with groupfolders.

Any idea how to fix this?