
DeanTheCat wrote: »There are a few factors that can affect how quickly you can return to stealth after initiating an attack on another player.
1) If you are more than 28m away (The maximum engagement range in PvE), you can almost always return to stealth without any issues so long as you don't enter the 20m frontal view cone of an enemy player.
2) If you engage the target within 28m but behind the target, you can almost always return to stealth so long as you don't enter the 20m frontal view cone of an enemy player.
3) If you are more than 28m away and enter the frontal view cone of an enemy player (Not the target), you can still return to stealth with a slight delay (Round 15 seconds) so long as you stay out of the 20m frontal view cone of the target.
4) If you engage the target within 28m and enter the frontal view cone of an enemy player (Not the target), you can still return to stealth with a moderate delay (Round 25 seconds) so long as you stay out of the 20m frontal view cone of the target.
5) If you engage the target within 28m and enter the frontal view cone of the target, you are locked in combat with the target. This combat state will last for up to 1 min after the last heal/attack lands. HoTs like Rapid Regeneration or Rally counts as a "Landed Heal". While in such a state, you cannot return to stealth.
This picture may be useful in trying to understand how detection works.