Blenderseed works on Blender 2.82a, but strange preview bug on more recent Blender 2.83+

There might have been a change after Blender 2.82a. In Blender 2.82a, Blenderseed does work flawlessly. On 2.83+ and 2.90+, there is a strange render preview bug.

This bug turns Blenderseed unusable for newer Blender. Do you know about a change in Blender after 2.82a, which could cause these issues?