B Button (Playerlist) doesn't work anymore

Game mode: [Online]
Problem: [Bug]
Region: [EU]

Since yesterday the “B”-button for opening the playerlist does not work anymore.
Also binding the playerlist to another button isn’t possible, 'cuz there is no option for that in the keyboard settings.

My “B” key has never worked for a player list. I keep hearing people say it, but no go. (PC version)

Instead I do a shift+TAB then select view players. Clunky, but it works.