today I fixed the last known bug in MySQL Sync. There was a problem, that origined in the 1.4.10 Performance and Bugfix update, which executed many tasks as asynchronously. One of these tasks was loading the player data, this was a problem, because setting gamemode and potion effects cannot run async in Spigot AND Folia. This was fixed by running these tasks in sync mode again, like before.
If you still find any bugs, join our Discord and feel free report them there.