What works
All the basic stuff works, including the tray.

What does not

If I restore from the tray left-clicking (rather than from the ctx menu), the application vanishes, while still being in memory.

Key bindings don't work; key bindings menu doesn't work properly.

What was not tested
Printing.

Additional Comments

I would give something between Silver and bronze, but the menu is slightly coarse-grained :-)