Hope this is the right forum for this. Title says it all. This is for the new expansion mercenaries. My character is a Fury. With no mercenary my stealth spell works fine. (Can’t remember exact name of spell, I just woke up. Lol) With the Legendary mercenary , my stealth spell works fine. But when I have the Celestial mercenary summoned (he is a Coercer) , I cast the stealth spell and go stealth for about two seconds, then right back to visible. I just know that this will have a very simple solution that I am not seeing, but that has been the game for me for last three years, stumbling around in the dark,lol. But I keep trying cuz it is fun.
I believe the Fury invis is a group version that cancels on any group member casting, though I don't know 100% for sure. Harun Sprywing currently recasts one of his buffs around a dozen times a second, so it's more surprising that you managed to get the invis to last two seconds.