There shouldn't be any changes to custom statistics that I'm aware of, but there are changes to the HUD queries, which might have caused what you're experiencing.
The easiest way to figure out what isn't working is to enable logging (Configure --> Options --> Logging Enabled and restart PT3) and import while playing for one full orbit then attach the C:\Program Files\PokerTracker 3\PokerTracker.log and C:\Program Files\PokerTracker 3\PokerTrackerHud.log and C:\Program Files\PokerTracker 3\Data\Layouts.pt3 files zipped up to a
support ticket. These logs tell us exactly what is going on when PT3 is working and should indicate what errors are occurring. The layout file will be useful for helping us pinpoint which stat is the problem in conjunction with the log, so that we can get this fixed quickly.