Select and Mask Not Working. Photoshop CC 2021 Beta
Using a new M1 MBP running the beta version of the app. When I edit the mask of a layer is seems to preview and work as expected but when I confirm the new mask (click "OK") the mask does not update properly. Not sure if this is a beta bug or user error. I've been able to work around by making a selection then hitting the layer mask button, but it'd be better if select and mask interfaceapplied changes properly. See seasonly themed example below.
Snowman with current mask missing arms:

Select and Mask interface with desired updates to mask:

Result after clicking OK:

Just tried intel based PS CC 2021 thru rosetta so I'm assuming it's a beta bug.
Correct me otherwise!
Thanks
