I am able to walk through solid blocks and suffocate. I can't exactly walk through a wall but if the block is at head height I can walk through it. The video attached below shows the problem. My phone is a redmi note 8 pro. Seed is 404. I don't have any behaviour packs active but I have some texture packs. Which shouldn't affect this. I'm not really sure how to recreate it. It just happens like some freak accident. i was mining a vein of coal ore for smelting sand into glass. i was trying to pick up coal behind when i went through the head height block.