Kekatar error when a filename is already taken (but it seems to be working as it should)

When you try extracting from some TAR archive (like .txz or .tgz or .tar or .tlz or .tbz2) and there is already a file in that directory with the same filename as some file in that archive (like if you tried extracting something twice or it's maybe some other file), you get a notification that the extraction has failed and it says
> Error code 1 using "kekatar" Unknown error

But the extraction dos not actually seem to have failed (if the filename is taken, the number 2 just gets added to the filename for the new file)