Rated 4 out of 5 stars

... on Mac one cannot create, edit, rename or delete categories. For creation, the input mask stays on top and nothing happens and even "cancel" does not work, so Thunderbird has to be force-killed to be usable again. I think it's some Javascript compatibility issue. On Windows, the plugin works fine and as it should. PLEASE do address the issue! I cannot use the plugin on my Mac as it is!

Léirmheas ar leagan níos sine den bhreiseán seo (1.57). 

what is your environment? Mac OS, card dav server, thunderbird version, sogo connector version?