Photoshop Beta Error "288b8e.122" when using General Distractions tool

Photoshop 27.6.0 Beta - using Find Distractions General.....I often get this error "288b8e.122".  

It occurs when I run the General Distraction finder, and then select a particular kind, e.g. vehicles......then I used the ⌘- key to try and brush away the removal on, say, one of the vehicles leaving the rest - and it faults.  If I let all the vehicles run, it removes them all - so it has to do with trying to remove part of the selection.

1. Start the Find Distractions | General Tool - on an image with some vehicles and other distractions
2. When complete, turn off / select none; then just select the vehicles option
3. Using the ⌘--key, brush away one of the vehicles and then confirm with the check-mark 
4. Watch for the error “288b8e.122”
5. Try again - but do not edit the generated masks…..seems to run okay
6.