Before anyone recommends it, I already tried deleting the cvars files and reinstalled the game!
My problems are (yes multiple, love this game)
1. I can't use any buttons while sprinting. So for example while I am sprinting (I use HOLD shift to sprint) I can't press melee to interrupt the sprinting and melee. This also affects SHOULDER CHARGES which require me to sprint in the first place. So this is definitely a bug.
2. The game uses keybinds but only for SOME stuff that aren't even assigned. Neither my account nor computer control settings use F as a Keybind for anything but when I am playing in the game, I can press F to use a melee. So another bug.
3. When I switch out of the game and come back, it randomly activates something. For example I am shooting for a second, or it opens the chat or I start doing an emote. Without even pressing any of those buttons.
My keyboard/mouse shouldn't be the problem either since I only have issues in Destiny2 and holy f I am about to quit this game.
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Even though you are not experiencing problems with your keyboard, I would say, go buy another one and see if it keeps happening. Just to completely rule out that possibility. If it was a bug, there would be tons of posts about it already.