So I got very excited for the new nether update so I got on with my friend and when we were playing and I was sometimes loosing control and it was hard to navigate my camera until I realized most of the time not 100% of the time when I closed out of my crafting table, my furnace, and my inventory my mouse jumped and made me look all the way up or all the way down this made it very hard to throw my friend something. I don't know if this is to do with how you move ur mouse in ur inventory or etc. but it makes it very hard to look around sometimes like moving furnace to furnace.