When travelling between the Overworld and the Nether, the player experiences suffocation damage. On an intermittent basis, the player will be killed, with a message indicating they "suffocated in a wall".

Based on my tests, this issue may be limited to portals created in the cherry grove biome, as portals elsewhere seem to function normally.

The world in which I originally observed this behaviour is a vanilla multiplayer server, in Survival. I've been able to reproduce it on a local copy of the world, as well as a different world that used the same seed, was created locally, and has only been played locally.

I also tried a new world with a similar spawn (ie. in a cherry grove biome), and did initially observe some suffocation damage, but was unable to reproduce the original issue in the different world.

I haven't been able to find any logs so far; if you'd like a copy of the impacted world, please let me know.

The seed for the impacted world is 842595. The other seed I tried was 447.