I have a problem with undo and redo when working with layers.
It is easy to reproduce using the Layers_AllTypes demo (Layers.exe).
In the demo open a image and add a image layer to it. Then move the layer around a few times. Do undo all the way to the begining and do the redo to the latest state. You will see that the layer image changes to the background image...
Is this problem fixed in a later version or is there a workaround...
Then I moved the second image layer 5 times. Then I called Edit > Undo 5 times. The last item offered to remove the layer as expected. Then I called Edit > Redo 5 times to return to the final state. I could not reproduce the issue.