This is a problem that only happens if you are playing as part of a pair or trio (on PS4 or PS5). The problem is that if another player uses a portable signal detector only one member of the team gets the notification that a PSD has been used.
Please can the match making be updated to take into account blocked players. I noticed that I’m often placed in a lobby with a number of players I’ve blocked in the past (some because of problems I’ve had with them in other games).