Currently crew will clip through pretty much anything.

After changing their "home" to a ship using the "goto" command crew do not properly align with the ship, and thus clip through once the ship is moved.
The crew members will stay in their relative position in space, ignoring ship movement.
Issuing a "goto" command to an interior ship block, then moving the ship causing the crew to clip outside, then issuing a "follow" command creates and odd visual bug. The crew will return to the point in the ship albeit in a glitched motion, then follow the player from that point. (reproducible)

The crew has a "home" set via the "goto" command on a ship, and the crew verifies this in their dialogue. Then the player has that ship use its jump-drive. Sometimes the crew will make the jump with the ship, most of the time they will be seemingly left behind. However, if the player logs out, and waits for the sector to reset, upon logging in the crew that was seemingly left will be back, usually floating outside the ship somewhere.

If you tell your crew member to stand on a station floor, then reload the sector, the crew member will sometimes start to clip through the floor and fall to the next floor, then teleport back up only to fall again. This seems to only happen if there is a "floor" to fall to, and even then its inconsistent. (reproducible, non consistent)

When "wandering" the crew have a habit of clipping walls, corners, tetras, and others. Sometimes this causes the crew to pause their motion until they unstuck. More commonly it causes the crew to try and jump the obstruction, which puts them ito an endless jump cycle. (reproducible depends on conditions)

Crew will only follow commands and "register" the player within about 60 meters, but this seems inconsistent as well.