Old bug that you attempted to fix in the 9-16-2020 patch *** Spells *** - Corrected an issue that would cause the messages displayed when a spell is overwritten or wears off to either fail to display or display incorrectly. Twincast Aura is still being mistaken for a summoned pet 9-17-2020
This bug has been around for years. I named one of my mercs on my cleric (five years ago or so), and everytime the cleric's two auras wear off, the merc "expires" instead of the actual aura.