If a seated player leave the place or reset, does the SeatWeld disappear?

I'm making a script about it and I don't know if I need to check if the player isn't there anymore.

(if you didn't read the title:) If a seated player leave the place or reset, does the SeatWeld disappear?

First of all, This is off topic But anyway, go into test mode and take a look for yourself.

I believe this can be prevented by a script that clears debris, or just say clean if kohls admin is in your current game. Otherwise, ask someone else.