Created attachment 69293 [details]
last state before wrong end

In the attached screenshot, you can see the situation immediately before the wrong evaluation (ignore the message in the middle of the screenshot). After the next move (removing the two red tiles on the bottom left, Klickety told me that the game was over, although another move is possible (the two remaining red tiles). However, saving the game somehow did not result in the current state, but lots of moves before.