XB1X
I have same issue with m showing up randomly while ads and random crosshairs.
It looks like it happens randomly whenever you're in a server with a game currently running, perhaps no matter where you are. It would be interesting to see if this happens in Spectator mode, too, as that'll interfere with lots of cinematic recording and other uses. Here you can see the "m" at/near the center of the deploy screen.
It is not random. It appears when any sniper shoots by RMN50 frag granade riffle.
OK I can confirm, the letter "m" is caused by teammates using the RMN 50 nade launcher. It doesn't appear if your opponents are using it. The duration of the "m" depends on how long the RMN 50 user holds down the trigger for.
Hi, me too.
