Undo after drawing rectangle breaks

I've noticed a glitch that occurs sometimes after drawing a rectangle and then using the undo function. The geounits still appear selected, but the "Accept" and "Reject" buttons are gone.

This seems to happen when you finish drawing the rectangle quickly after you start drawing.

Start by reproducing the issue in the frontend: draw a rectangle quickly, finish it, and use undo. Trace the rectangle-selection and undo handling from the reproduction path; done means the geounits and the "Accept" and "Reject" buttons remain in the expected state after undo.

Written by the indexing model from the issue text.