Does BG3 automatically stop all character movement when you perceive a trap? If not, it should.
It absolutely does not.
On the contrary ... it absolutely DOES!
But your roll have to be done "before" you get close enough to those traps. :-/
Perfect example are those exploding flowers in Hag's lair ...
Once you pass your perception check, no matter where you are going, none of your companions will make them explode ... bcs they "know" about them and therefore dont step on them directly.
Sadly (especialy in the swamp) sometimes perception checks for traps are done sooooo late, so you allready stepped on the trap, in the second the game finaly informs you that you knew about it.
