Greetings Haskellers, I'm relatively new to the language and I'm writing a basic game of life simulation to try out the SDL bindings. The program updates the window with the next generation of cells each time you press 'n', and the problem I'm finding is that every so often the window stops updating. The program continues; refreshing the window (by moving it, say) updates it to the correct current state. I thought there must be a big problem with my code, but found the same behavior with lesson 20https://github.com/snkkid/LazyFooHaskellof the SDL lazyfoo tutorials (the animation test). Can anyone explain what is causing this? I hope to hear I've made some obvious mistake, rather than discover any limitation with the useful SDL bindings..