If you downloaded DisplayFusion 12.0 and are having issues with languages please re-download and re-install. We have repacked the release as 12.0c with the languages fixed.
Thanks very much for the new version.
I have in fact been hoping the new versioƱ would have an option to "go to desktop for the active monitor only" option, which a few other multi-monitor applications seem to have had for a while. Is there an option for this in the new version please?