In RL football this might happen once a season: https://cust28.myfootballnow.com/gamecenter/view/2789#494468

I'm seeing this as a regular occurrence and it happened twice in this game.

In real football some of key points of playing QB could be described as such:

-You don't throw back across your body ( I see QBs throw to the opposite side of the field across their body all the time in this game)
-Never throw late across the middle
-No premeditated decisions (locking onto a WR until they finish their route describes a premeditated decision to me)

I'm not sure how this relates to this being a bug that needs to be fixed?

My QBs always have extremely high intelligence and discipline so theoretically this should not be happening if I am to apply your observation.

Whatever RNG that is currently being used needs to be tweaked.

Yeah I'm not even sure who the QB is even trying to throw to on those
plays.

He probably just thought he would get the usual "defensive holding" call when a RB/FB is engaged with a defender behind the LOS.

"Look, they're grabbing each other. Throw it before they let go so the ref will throw the flag!"