While trying to undo a point of a takeoff active on a plan, the Ctrl Z function appears to be undoing the search text history in the Pages sidebar.
Hey Eric. The undo/redo function depends on your last selection. If you last searched the pages sidebar, undo/redo will undo the text you typed, but if you re-select the image and undo, it will undo your last takeoff/remove a point from the active takeoff.
Are you having this issue after re-selecting the image?