I am actually in the same boat on CentOS 8 with Java 11.0.9.1.
Bug 1015/the linked issue seems to be different as the system is freezing on import. On my system and as far as I understand, on this post SweetHome3D is crashing.

# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.202-b08 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libawt_xawt.so+0x45ee9] ReadRegionsInList.constprop.5+0x4e9

I have thread dumps available.