Somewhat rarely, I will encounter a bug in which my weapons start switching constantly and am unable to stop it. If I try to bring out a different weapon or ability weapon like a defib or the grenade launcher, it will just go back to switching between my primary and secondary. The only way I’ve been able to get it to stop is to be killed or suicide. I use my side mouse buttons for a quick switch, as well as the number keys for normal switching. This has happened with two different mice and two different keyboards, so I’m lead to believe this is not the issue. I thought that maybe it happened when too many switches were attempted at once, like pressing the side button on my mouse while also pressing a key on the keyboard, but I have not been able to replicate it with that method.
