Uh, is this bug new? If you get Mystic Balance as a Chemist while Might is active, you permanently lose your 1-tier BYSSEPS cast (i.e. the 2 Mana & 4 Mana after MB cast). Your BYSSEPS starts at 5 Mana per cast.
I thought this was weird in the Daily...just tested in a random run and it's the same.