Gnosis 1.0.6 is now available and includes the language file you provided with a credit in the code and release notes to you.
I tested it in three separate Joomla! installs; two of which was a French install, and switched back and forth between French and English. The tags are now correctly translated with the respective language.
I think with this release Gnosis is finally getting close to a release candidate.
Below is the gnosis plugin if you want to only install that, instead of the entire package.
.. or you can get the entire package here:
hypermodern.org/index.php/joomla-extensions/gnosis-glossary
Nothing has changed in the gnosis component though.
If you have uninstalled the gnosis package, and have trouble reinstalling it, just unzip the package and install the extensions individually.