bug traps me in the void and i cannot move, nor do any blocks spawn

so when i beat the ender dragon, there is this thing, (it could be a corrupt file not a bug) but when i went through the portal, i just spawn in the void. i can tell it is supposed to be my house because i can see the two armor stands but they shake and are erratic. also, when i go to shoot arrows they stay still also with the glitchy motion. i worked so hard on this hardcore world and i dont want to loose it. somebody please fix this.