I switched to Wayland from X11 and Sweethome 3D 7.4 is running nicely -:)
Salutations
Herman

Add: system is Suse Tumbleweed, NVIDIA Quatro M4000, all drivers up to date. Using the Java openjdk version 11.0.23 gives these kind of errors too.

Followed a recommendation, run in terminal. May be it gives some clues.
HPZ4Tumbleweed:/opt/SweetHome3D-7.3 # ./SweetHome3D123
com.jogamp.opengl.GLException: J3D-Renderer-1: Error making temp context(1) current: display 0x7f12dc14a890, context 0x7f12dc2f5818, drawable X11OnscreenGLXDrawable ...