I've noticed this with glass railings & of all things, umbrellas....
But this does not solve the garage door issue unfortunately.
The rest of the doors render correctly though....
My alternative route is to
A) create saved 3D view in the view map and hide the garage doors.
Then in the place of the garage doors show curtain walls that Twinmotion can render correctly.
B) Then in all the technical drawings show the garage door and hide the curtian walls in their view maps.
A clumsy solution, I admit, and I don't know how to isolate the objects and toggle their visibility as described between viewmaps.
ArchiCAD24 - since Nov 2020
Revit - 2005 to 2020
Windows 10 Pro
2 screens: nvidia quadro RTX 4000