As of 1.19.4, when an enderman encounters an area effect cloud created by dragon's breath or a lingering potion of harming, it will never teleport away and instead take damage.
MC-265467
Endermen no longer avoid dragon's breath or lingering potions of harming
Open
6
(Unassigned)
Confirmed
Platform
Normal
Mob behaviour
1.20.1, 1.20.2 Release Candidate 2, 1.20.2, 1.20.4, 1.20.5 Pre-Release 4, ..., 1.21.3, 1.21.4, 1.21.5 Release Candidate 1, 1.21.5, 1.21.6
Retrieved
Can confirm in 1.21.6