Well. I again recommend to read the existing posts to this topic within the search link I have posted above for you.
Then you might notice this one
and realize, that there are arguments that this is an issue apple has to fix in their OS because it might be caused by how apple is handling WebDAV drives.
You may also notice that there a cryptomator beta out that does not require WebDAV anymore and therefore might be an option.
And no: there’s no official date when cryptomator 1.4 (stable) will be available