Time stamp of folder not preserved after copying, but time stamps of files are correct

When I copy files to a vault, the timestamps of the folders are changed to the date and time of uploading. This is also true for subfolders. However, the timestamps of the files in the folders (fortunately) remain correct.
The vault is stored on Dropbox or One Drive, I am using Cryptomator 1.14.0 and WinFsp (local drive). The problem occurs on two PCs, one with Windows 10 and the other with Windows 11.
I just switched from Boxcryptor, this problem makes Cryptomator a bit difficult to use. Are there any suggestions to overcome this problem?

Maybe interesting for others with the same probIem: I have used the tool FolderTimeUpdate to restore the original dates, which worked well.