[GAMEPLAY] Caitlyn trap under teleport - bug or intentional?

I've noticed that if I place a trap directly under someone teleporting to a minion, they still have time to activate a dash ability, flash, etc. This occurs even after the trap has already clearly been primed and leaves it sitting there uselessly.

This is counter-intuitive, since the first action that teleport should have is placing a champ on the ground - leading to a trap activation. There should not be any delay where an ability is allowed to occur prior to trap activation.