Ok took some screenshots on mobile before and after buying and using a club pass as you can see with time shown top left the actual time till next pass continues to drop from 1h6 minutes b4 i bought the pass then to 45minutes after i have bought and used a pass (doesn't revert back to 12 hours)
Clear as mud ;)
Thanks for the effort and the proof! I take it as you say, and to be honest, I never looked into that situation in detail.
The more obvious fact is that you don't receive a free pass while you have one in your account.
It's possible that this buy-and-use process doesn't touch the clock - perhaps only recently(?) or exclusively on mobile(?), but why has nobody ever objected to the -12 h statement?
May be different on pc, may try it out one day
I repeat my mantra: "Don't buy a CC pass. Never!"