As of Requiem 2.0.0 beta 7 for Minecraft 1.18.1, Enderman, when possessed, are unable to auto-step elevation differences of 1 m, even though that is possible in vanilla Minecraft.

From the Minecraft Wiki:

Endermen can step up one full block without having to jump.

To reproduce:

1. Have some terrain, with blocks separated by elevation differences of 1 block (1 m)
2. Spawn or find some Endermen.
3. Notice that Endermen are able to step up one full block without having to jump.
4. Possess an Enderman.
5. Notice that the possessed Enderman is unable to step up one full block without performing a jump.