Portals, both nether and end, have the chance to kill you and remove all your items when entering.

Within the first few days of the 1.17 release i crashed when entering a nether portal, being told i "suffocated in a wall" by a friend. Yesterday the same thing happend in an end portal. This is happening on multiplayer worlds on console, not realms. I have to restart my application each time aswell as it keeps you stuck on the loading screen.