Problem with days spent in base

[Tom]

I have a problem. When I finish a patrol, the next patrol starts on the same date. The game doesn't advance the date between patrols as it should.

I checked that my basic.cfg has (as it should):
NbDaysInBase=20

Likewise, I checked that sh3cmdr doesn't change this value. I also did several tests starting a new career with and without Commander, using different Commander options for time spent at base (random days, set amount of days), started a patrol, returned to base, and the result was always the same: the next patrol starts on the same date the previous one ended.

Buying upgrades advances the date as it should.

I'm confused. I have no idea what to try next. I can of course edit the starting date in Patrols_0.cfg (which, by the way, also has NbDaysInBase=20 for the patrol, as it should) after each patrol manually, but this is tedious.

Any ideas on what may be causing this problem? Or any ideas on where to look for settings that control the advancement of time at base?