Image editor - undo changes

There should be an undo button in the image editor or it should ask if I want to keep changes when closing the editor like in CC. I accidentally changed position of polygons points and I had to reload the whole project to revert it back.

If you close the editor then hit the main window's undo button, it undoes the change. You'll notice the last undo item is 'Edit Sprite Texture', even if you just changed some image points/collision poly points.

If you close the editor then hit the main window's undo button, it undoes the change. You'll notice the last undo item is 'Edit Sprite Texture', even if you just changed some image points/collision poly points.

Perfect, it works. It's just bit less user friendly to close the editor's window, click undo and than go back editing than have it already in the editor's window or upon closing. Will you add the function to some C2 future version?