Tp anywhere floats into ground

[blackspider9678]

I'm currently making a pack with the valkyrien skies mod and have a server set up for the pack. Whenever a player teleports to another player or another location they tend to start floating underground. I tried the mod on it's own with /rtp command and teleported, but that doesn't cause the bug. It only happens when there are lots of mods that cause some chunk load.

[ShiratsuYudachi]

same problem, but I'm not sure VS triggered this bug
using vs with spongeforge, and I turned off any options relating to something about "disable moved wrongly" in sponge's config