The lamp has green jewels when King Leopold finds it.
Later, it has red jewels.
The lamp is either playing traffic light or it's a continuity error.
Regina is wearing the fireman's coat one second...
...and the next second it's gone.
Regina was either so mad that she accidentally used magic
to *poof* the jacket away or it's a continuity error.
 The troll pulls Snow White's wanted poster from the bag.
 A few beats later, the troll pulls the wanted poster from the bag again.
It's either deja vu or a continuity error.