My passenger window somehow gets out of the railings while going up. It happens somewhere in the middle. So if you use the window you wont notice it went up wrong. Just noticed it when I got out of the car already that the window wasnt in the railing.
As of now, the only remedy is to push the window toward the back while its going up so it doesnt get out of the railing.
Happened on my (former) series 2, one bolt holding the base of the mirror went off.
Also happened to the elantra, parang napunit yung sleeves sa railings kaya nalaglag. Replace it immediately. It will affect the mirror if you close the door while the window is rolled down. Iingay yung pagsara at parang may mababasag sa loob.