I’m also experiencing this issue in a game with friends. I noticed that when the entire group attacked the same creature, the issue didn’t occur. However, if only one member of the group went into combat, that person would have the issue and everyone else would be ok. Not sure if it happens this way every time or not, as I spent most of yesterday trying to figure out what started it at all.
I’ve tried all sorts of things to remove the debuff, and the only thing I’ve gotten to work consistently is getting stuck in a spider web. This has worked for multiple teammates, in at least the last 4 times we’ve had the issue occur. However, I’m not going to rule out that it could be a coincidence until I have time to test more.