I have experienced the same problem: Astro Binding Triggers Stop Working
An event is not triggered, with no explanation and no error. I restart openHAB and it works for a while, then it happens again. I just installed a clean new openhabian and openHAB 3.3M2 on a separate Pi with only a couple of bindings. I’m using it to control critical functions (like turning on the outside lighting at dusk). I’m going to see if it is more reliable than my full system.