RH8 Crash: Material transparency

Serengeti (Rhino 8 BETA) Mac
1

the following steps are constantly crashing my RH8:

  1. Create a new rh file
  2. create a new standard material
  3. change its transparency from 0% to sth else.
  4. crash.

Can someone reproduce this?

Cheers

edit: this only seems to be the case when the transparency value is typed in instead of using the slider.