Lighting Torch Glitch

At night I have noticed that when I place a torch, the light only shines towards one direction (compared to shining in a full circle). I have also noticed that acacia trees will sometimes spawn on top of each other, not sure if bug or feature. However, the lighting bug I have noticed most of the time. There is also a delay in the pressure plates (used on doors). Thank you for your time, not only in creating the game but also in reading this. 🙂