Im able to go thrue blocks in survival. The block on the playerhad level sams to become Transparent. while the bottom block is able to stop the player.

Steps to I am able to follow to produce (Lag seams to be important):

1) place any block in the air on your hadlevel.

2) Try to run into it from different sides also works while swimming (corners usually work).

Ressult: you go forword and get stuck in blocks with your head.

What schuld be: You crush into the block and don't go forword.

Sometimes it goes away if you leave and go back but it always apeared agien sofar. First all is alright but later it starts to work from all sides and im able to freely go throu a headlevel bariers like in the room I made the pictures in.