Strange behavior of windows in Cubase 15

Cubase
1
  1. When opening a project from the Hub, its window size is always transferred to the project window. The project window doesn’t appear in the last saved state and size though the “Open Projects in Last Used View” option is set to “Always”.
  2. When a project window is maximized, the left edge is not at the left edge of the screen (as is normally the case), but at the left edge of the hub window.
  3. The buttons in pop-ups often appear in black and cannot be used.
  4. All of this behaviour doesn’t happen with Cubase 14.

(Cubase 15.0.5/Windows 10)