On a realm, was in an End City, while fighting a Shulker at full health, I was instantly transported back to the realm spawn point in the over world. I had lost my stuff, but I did have my experience, so it did not seem like a death.
Leading up to this I had died in about the same location from fall damage, but it was when I returned to the same End City that I was teleported. When I went back the third time I retrieved my stuff and was not able to replicate the issue.
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