Issue I565 [gui,defect,resolved] Command bar history corruption on repeated commands. Example: Enter these on SIMION command bar: print(123) print(234) print(123) Note: third command repeats existing command. Command history (up/down arrows) now shows missing history, and this also raises an exception. Affects 8.0.6-TEST7 to 8.0.6-TEST9. Resolved in 8.0.6-TEST10.