BuddyPress.org

@sjoerdlagraauw as r-a-y mentions test this version of bp

BuddyPress 2.6.0 Release Candidate 1 now available for testing

regarding @mention as danbp suggested its not a bp issue. i checked this myself. its working in default 2016 theme of wp. but NOT working for other paid themes i have.

mostly paid themes or custom themes use their own jss/css stuff in their own custom manner which creates an issue.

if you got jss/css issues best of be asked at the custom themes support