Bug report: undo disabled after in place block edit (Rhino 5.2 WIP)

Hi everyone. I am using using Rhino for Mac WIP 5.2 5C133w and found out this: undo works ok, but if you edit a block in-place (double click) then you won’t be able to undo.

best,
Bruno.

I see this too. Logged in MR-2620. Thanks for reporting!