Nearly every time I enter the nether on my single player world, I'm only able to interact with the environment, hotbar, open chat button, or pause button for maximum 1 second before I lose that ability. After that time frame, I can interact with the environment in some respects, like when I break blocks, the texture doesn't disappear but when I walk over it the block is missing. Then, I lose most interactions. Im still able to interact and get responses from the movement arrows, jump, and sneak, but nothing more than that. When I try to break a block I get absolutely no response. When I try to tap on either the pause or open chat button, those two buttons and the hotbar disappear. The movement buttons, jump and sneak are still visible. If I keep moving around for long enough, a connection bar appears as if it is trying to connect to the internet (see attached). Another odd thing is that one of my many times reloading the entire app, when I re entered the world I was on the surface directly above the coordinates of my nether portal. (It is built in a cave). Another important detail is that I'm in a no cheats survival world that is purely single player.