It is not smart moving. I have never used smart moving before other than this modpack and I have still experienced it. However I have used weather and after removing weather due to lag I noticed the effect stop. Also I can't open single player worlds and on my one multiplayer the blacksmith stuff is broken.Thats Smart Moving... Press F9 disable smart moving and you can glide well....
U place your broken armor in the anvil and hammer it.....
Yes Master blazes are in the end :3