When teleporting through a portal, the player is "placed" 1 block forward and 3.5 blocks to the side of the portal. Attached image shows where player was "placed" after passing through portal. Glitch occurs through both directions: overworld to nether, and netther to overworld.
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Dupe of MC-73504

Thanks, Sonic. Searched for about 20 minutes but couldn't find anything.

No problem! 😉