【REDSEC】Conquest UI appears and renders the game unplayable.

Symptoms:

My character does not appear on the standby screen in REDSEC.

Opening the class selection screen shows no UI at all.

The moment the game starts, the screen shows a random part of the map along with the Conquest UI, but I cannot deploy or change weapons.

On other players' screens, the game is progressing normally. I am apparently dropping with my squad, but I cannot control my character.

The only way to resolve this is to leave the match.