I've found that doing something in /say fixes it, but only if i'm the one bugged out. If nobody can send me tells? Doing /say hi and I can send / receive tells, do /who all etc.
If I can't send Bialar a tell but I can Detoxx a tell? Bialar is the one who needs to use /say.
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Butchh | Facetious | Knockers
Jayce | Briefs | Squash |