WZ 2.2.2 On Mac : Key mapping changing

[pmat]

Another annoying thing is about key mapping on iMac.
In preference pane, I configured the function keys to work as F1, F2, F3, F4, etc. ( special Mac Os keys deactivated) so I can easily access functions ingame.

But sometimes other keys mapping are changing. For example, selecting a group of units. The default mapping is hitting the keyboard number ( hit 5 for selecting group 5 ). But sometimes, those keys are not recognized and are replaced by other... if I remember well, hitting 0 is understood as "world 4" in the keymapping preferences. When I launch the game another day, the keys are correctly recognized and so I need to go back to default settings.

Is it a known issue of the game ?

[themac]

I am also a bit confused with the keyboard mappings, so I avoid to change anything with it if possible.