Solved Some Players can't move after server saved

I noticed that recently as i do get a lot of requests by players been stuck and unable to move anymore.
Some seconds before they called for help was a server.save running which took about 2 sec.

Can anyone confirm ?

ps: server restart doesn't seem to help

 

Yeah I've had some players complain about being stuck in invisible stuff last night, not sure if it has to do with saves or not though.. Relogging seemed to fix it for them.