Conditions: My characters had Rotting, then went to camp, next day the effect timer was counting from the same round as the day before. Effects should be stripped after long rest?
I didn't know about that one. In principle, long rest should take at least 8h and many effects with a duration should disappear naturally (without a need for a mechanical/coded remove-the-condition-if-long-rest). But in practice, the current version of the game has almost no idea what time is. So it's not surprising that you wake up on the next round. After all, you can short rest (in principle at least 1h) during a round (6 seconds) when you are in turn-based mode, but not in combat.
