So yeah, I um, slipped and fell into the Singularity drive and couldn't get out! Since I couldn't leave ship interior there, had to log out into character selection and back. Luckily I was in the turbolift when I returned.
I also had this... 'problem' and reported it in game via the bug report menu. I assumed they had the invisible walls to keep us from falling... and we all know what happens when we assume. This bug was more humorous then annoying.. that is, until i realized that I didn't die from the fall.