How do you take away this bar whereas voice chatting and taking part in video games on new Android units?

On a brand new OnePlus 13 throughout cellphone calls this bar comes up and received't go away. I've regarded via the menus and might't discover something that appears related. I seen it was doing this on one other machine on the retailer as properly.

Anybody know tips on how to take away it? It reveals up throughout Discord, Whatsapp name, cellphone calls, something that includes voice chat.