I’m still looking into the camera culling causing items to disappear. You can temporarily disable it under [Settings > Camera] and move the camera to make everything appear. I don’t recommend disabling it entirely because it does help performance quite a bit when it’s working right.
Flash End-of-Life has been announced for quite a while now, and is not something I can affect in any way. MaD2 Download is futureproofed against the EoL, and is available in various places: https://www.kongregate.com/forums/9794/topics/513429#posts-13230330
I’m still looking into the camera culling causing items to disappear. You can temporarily disable it under [Settings > Camera] and move the camera to make everything appear. I don’t recommend disabling it entirely because it does help performance quite a bit when it’s working right.