I have another problem. I am still trying to get some logs however it’s not easy to reproduce. Basically I leave my Cryptomator WebDav volume mounted and unlocked overnight. The next day I try to open a folder in the root directory. First for maybe 1-2 seconds it seems to work and finder shows the content of this folder. However after the short time finder somehow jumps back up to the root directory. If I lock the vault and unmount. And then unlock and mount it again everything seemingly works fine. So I assume it’s only after longer periods of inactivity.
I restarted my Cryptomator now with debug mode for logs and will update this post if the problems happen again.