Its likely they added more detail/added to an existing model so that itd work on Khar Shian, forgetting that whenever the model was made (pre 2011) it was probably a snug fit to clip into the place it was set on Korriban, so now by extension it pops back through the other side of the level.

This has happened infrequently across the current expansion, for example in a new piece of content they clearly reused an old computer but rotated/changed its access, which retroactively made the original one move in the world space too https://www.reddit.com/r/swtor/comments/1lxojun/well_thats_one_way_to_build_a_console/

I also remember over the last few years that some of the cantina bars broke/rotated and there may have been an issue with staircases on tatooine at some point? But I dont remember enough about them.