IR crash in viewport with vertex maps

[Cinemike]

Load the scene.
Start viewport IR.
Switch off or on the linear field (see image)
Restart C4D.

Bonus bug:
User VFB IR instead of viewport IR.
No crashes, but no proper update for the fields effects either.

PS I take the non-crasing back! You just have to be persistent!

Win 10, C4D R21, Corona V5, latest updates everywhere.

[Beanzvision]

Hi Mike,

Thanks for the report and repro steps. I can also confirm this is happening and has been internally logged.
(Internal ID=442815175)

[Cinemike]

Still crashes with V6 RC 1 (I had to uncheck "Freeze", the Linear field did not do the trick this time, but still ...)

[Beanzvision]

Thanks, the bug report has been updated.