Missed alerts on any version > 5.8.6.7

[dodgeboy]

I've tried just about every version since 5.8.6.7, and every time I upgrade to a newer version I have issues with slow or missed alerts. I run a UI3 panel with auto maximize on alert, and it will completely miss alerts and never maximize a camera. If I revert back to 5.8.6.7, everything works again, without fail. I use CPAI on a different box, so it is completely unaffected by the upgrades. Did something change in the newer versions that requires me to change something in order for alerts to work again?