Yup, I've been having this too. I'm on an iPad Pro 11 inch 1st gen, and its even worse. One time after standing in an unloaded chunk for a while, I just spontaneously died. I also am unable to fire rockets to fly sometimes, and it seems that for part of the loading screen when joining a server, you can interact with the environment, because one time I joined into my survival server and when it finished loading I was dead. Simply awful, needs fixing.
@Bartłomiej Słodkowski I have updated the description to include the coordinates.
Here are some other issues I have experienced (I will update this with any more issues I find):
-Sometimes you can’t use rockets to fly the elytra (I’ve only experienced this on servers, but let me know if anyone has had it happen locally)
-Sometimes you can’t open your inventory for a few seconds (5-30) after exiting a nether portal. I haven’t tested to see if the same goes for end portals