Marr's ascent Solo

in Marr's Ascent the room with the sail named an emissary of Vapor, The water Spouts from the Marids Tend to put you underneath the floor.

I haven't had that particular experience, but you can walk around the very outside edge of the platform to the back where the emissaries are and body pull it out to you, never involving the trash. The only ones where this doesn't work is when there's beholders or electric wisps crowding the edges.

I never experienced this either. I wish I had some information to assist.

Yeah. Reported in beta. Never fixed. Jumping USUALLY gets you on top of the floor. Moving generally drops you all the way through it.

I found a couple of holes in the floor of the Veiled Precipice in Beta. I just walked forward and fell.

Yup.. jumping seems to be the only chance we've got of not falling through.