Seems like the last two days I've had more problems/issues with getting under the floor of the 3D world or attacked by mobs under the floor. In dreadspire, Zi'Thuuli's adds got under my group and chewed on them a few times. I know the ramps in Dreadspire have always had their problems, but the adds from Zi getting under the ramp is new to me.
In Veeshan Peak, Hoskar's Pet, was under the island and chewed on my group.
If there's been a change in 3D scaling / geometry then something needs fixing.