Quoted from Ferret:
OK, please let us know. It could theoretically be something as simple as the connector for that magnet being a little wiggly and needing to be reseated. If you're bored, you could potentially try downgrading to the previous software release and see if things improve, then reinstall the latest and see if it gets worse again. I really have no idea why that would be, since as I mentioned, our belief is that we didn't change anything about how the magnets are driven... but more data about a problem is always interesting.
I played a few more games. The top magnet seems to be ok, it grabs the ball pretty hard (but the ball is usually moving slower across that magnet)
The side magnet still seems weak. A slower ball will get caught most of the time. A faster ball will mostly get flung from the magnet. Like a Hot Wheels car on a track, the ball never stops, it gets accelerated across the magnet
I reseated the connector and there was no change, still weak or flings the ball
When I get some extra time, I'll reinstall the last code to see if it changes