Ableton 12 & Push 2 Garbage POLY Messages

[Breaks Dude]

Weirdest thing, it does not behave this way under Ableton 11.x.x.

Any slightly sustained note sends out a "POL" message if coming from my Push 2. It doesn't do this from any other external controller, or in V11. I'm using a simple MIDI filter to turn it off because this Poly message is driving my VSTs nuts. I'm stumped on this one. I know of no other way to make it stop. Anyone?

On 12.0.2 but it also does the same in the newest beta.

[[jur]]

In Push's settings, change PolyAT to MonoAT.