I've had the ping key binded to mouse 4 since the beta, just tried it ingame and it's not working, only to look to rebind it to find it's missing? Is this a known bug or am i missing something here?

I made some killjoy art today, thought I would post it here! Killjoy has been my main agent along with Jett since her release, while they are both so different I feel like they suit my preferred playstyles so well. I made a jett one earlier...