Caitlyn auto attack/ Braum passive bug interaction
Caitlyn auto attacks reset Braum passive if the auto damage applies after the passive expires. The video I attached shows it being done against a minion, and I have another video (link at bottom) which shows it against red buff. It can also be done to champions. Can be really annoying to have happen to you because it can be done indefinitely and if stacked up to 4 will still apply the stun as shown in the red buff video.