There is like a weird texture on my hand for the slim player model but no weird texture on the Normal (Steve) player model. I kinda confuse why this is happening. So i re-edit my skin but its still there! And its not coming of when i use skin costumization!
The Skin is a Steve-based skin (four pixel arms), so selecting Alex in the launcher is of course not showing the skin correctl, though one could argue that this should be detected by the launcher.