Volibear Fear Jungle Reset Bug

A simple but annoying bug, sometimes when clearing camps with if you start the camp with your e (particularly when going around corners and stuff) the monsters sometimes act like they have lost aggro (ie they regen their health like they were reset) making it impossible to clear the camp for the duration of the e fear. this has been going on ever since i started playing again this season, so i'm not sure when the bug became an issue, but it happens usually 1+ times per game and is really really annoying lol I'm pretty sure ive DLd some game in which it has happened if there is need for further info