We use a lot of the same CSS for user and group cards, and were using the bio excerpt for user cards and full bios for group cards. So the formatting was inconsistent and this caused our line-clamp CSS (which truncates long text) to break on group cards.
I’ve fixed it here:
https://github.com/discourse/discourse/commit/32102ddff394fe36020dc800b58f65591a685e9e