Context: This occurs in crossplay between Steam (PC) and Playstation 5 (physical console). There's currently a bug where I cannot see my friends if they are online and in the same server as I am. ...
Ideas
Same issue last night, i fixed it by walking up to my friend pushing the right stick in and going into spectate, his character loaded in, in spectator mode then exited and the problem went away hope this helps and just hope it wasn't the game deciding to finally work.