I made a new version of that island public and it is not happening in a Live session either, so now it is fixed for me. If someone else is having this issue, I recommend to just delete Stat Counters and then insert them into your project and configure them again if you need them. Stat Counters have a function to set Value of 0 on some event which would explain it, but I did not have them configured in that way and also in a way that they would affect only Players who Join In Progress and not all Players (I don’t see any standard settings that could be doing this even on purpose). Right now I removed all Stat Counters from that island becouse at this moment I only need functions that could be done with Stat Creator itself and with Stat Powerups.