behaviour: When the user clicks on file > remove tag the message "tag removed from 1 of 1 files" is displayed even when NO tags are removed (for instance because for the file type in question, no tags are selected in options > tags > remove). The file is not even rewritten, as it is bit-for-bit identical with the original file.
expected behaviour: In this scenario the pop-up window should not be displayed or display a different message.