Unable to drag and drop files and folders in NC 28.0.1

If i drag a folder Test into NC Webinterface it gets uploaded, great.

If i try to drag the folder Test into the folder Test a new folder TestTest gets created instead of Test/Test, so the upload of the files in Test to Test/Test has an error because that Folder does not exist.

So when creating the Subfolder the slash gets discarded

Is there a patch / hotfix, when will 29.0.2 be released?

End of January (it is 28.0.2, NC 29 was not released yet):

there were a few reports regarding drag&drop:

and there is one fix going into 28.0.2:

Please check if the one of the issue describes your error and if the fix applies in your case.