"Set scale" thumbnail button shows a wrong image in the "set scale" window, and can leave the program in an inconsistent state
- Run in debug mode.
- Open p39.zip.
- Select the "barbar" photo.
- Click its "Set scale" thumbnail button. Unexpectedly, the Set scale window opens with the "a" photo shown:
- Click Cancel. Unexpectedly, the "a" photo is now shown in the main window, but the "barbar" thumbnail seems to be selected: (Clicking on the "barbar" thumbnail doesn't correct the situation.)