Strokes made with graphics tablet do not get registered in undo history in special cases
Submitted by kij..@..il.com
Link to original bug (#767428)
Description
Undo will sometimes not undo the latest change. (I.e. the latest change is not in the undo history.) I experience this when doing drawing with the paintbrush tool. From my observations, I suspect it's more prevalent in large images. 1480 x 2233 was the smallest image for which I am certain this issue occurred. Also I suspect it has to do with my flaky old drawing tablet. This tablet will sometimes register a series of rapid on/off events (i.e. the pen pressure may rapidly undulate around the threshold for a click event). Still I would consider it a serious bug, if the undo history can be corrupted by an input device. Maybe this assumption could be tested by synthesizing some input events.
Version: 2.8.14