When trying to assign compose key(s) in the options section, no keystrokes are detected. I'm running Windows 10 version 2004 and have a Sun Microsystems Type 6 USB keyboard with Finnish/Swedish layout and would like to assign the Compose key (producing the same keycode as Menu on Windows keyboards) to function as compose. However, when the "Please press a key to use as your compose key" box shows, pressing any key except enter or space bar (which both press the "Cancel" button) has no effect whatsoever.

Moreover, checking the "Alternate compose key is always Compose" does not assign compose function to the Compose key, but as physical compose keys on keyboard are relatively rare, I guess this is not the intended behaviour. Other keypress detection applications I have tested have no issues detecting keystrokes apart from Sleep, Volume Up, Volume Down, Mute, Help, Stop, Again, Props, Undo, Front, Copy, Open, Paste, Find and Cut.