This happened to me my first game today, had to restart the game and then try reconnecting like 2 or 3 more times then it finally stayed in the game. Luckily they kept the game paused 'til I loaded in.
I think you can either turn the shader cache off and restart, the renable it and restart again, or you can go to %appdata%\local\nvidia\DXcache\ and delete the stuff in there, deadlock's shader file should be ~260-270mb in size
https://forums.playdeadlock.com/threads/keyboard-frequently-stops-functioning-in-game-only-especially-after-dying.84965/
perhaps related, I experience this bug but nothing like what you show tbh
Good luck securing /your/ orbs when you have 8 ping and the enemy has 80. You have to shoot your orbs in a 8+(whatever default buffer)ms window, else the enemy has a full 100ms to respond to your orb to steal it. You try stealing their orb? Hahaha they get 100ms to react to it. Meanwhile you get...
You're doing it wrong. To mantle it is W and spacebar at the same time.
From what I can see in your videos you are not pressing space while holding W into a wall. The moment I see you press spacebar while still holding W you mantle. This looks like normal behavior of the game, honestly.
Now...