Cannot save open file with same file name

If I open for example a powerpoint file from a cryptomator folder and just hit save inside of powerpoint it cannot be saved “error on saved” error message. If I try to use “save as” and choose same name as before powerpoint tells me, that the file is write protected and cannot be overwritten.

What to do. Use a different name works fine. But this is not helpful.

please try with the latest Version 1.4.5.