MacBook Pro 2017 with 560 dGPU
Simply open the Hope Cube blender file in 2.8.
Set the viewport to rendered mode in EEVEE.
Switch over to RPR rendering - crash.
Crash report logs attached.
Preview render Crash happens with 560 (metal) GPU as rendering device.
Changing to CPU only mode for RPR Preview Render does not crash.
Hopefully the logs will help find the problem with the 560 GPU.
Update: use_gl_interop = True
For all testing here.