I was playing on fracture, got killed, and this symbol showed up in my combat report. Looks like a lightning bolt with a slash through it. Does anyone know what it means? I've never seen this before https://i.imgur.com/MFQpYEl.png

Ive been looking for a fix to this problem, and I dont really see anyone talking about it. Every time I try to adjust the volume of my team mates, It ALWAYS resets to 50, so unless they're in my party I cant adjust their volume at all.