About the bugs you mentioned with the debug room and the teleporter, was the message "Failed to load angel_5.png" or something similar.
If it is, then the glitch is a memory issue that exist since the last patch. Basically certain saves spot (I don't which one for this version) don't work properly, and when the save file becomes too heavy, the game won't be able to laod certain ressources (character's faces in dialogs in that case)
as for the crashes, it's either the same glitch or just a memory issue. A possible fix could be moving the game on a separate drive to free some space on your computer
Edit: Also I forgot to mention that the birth menu was glitched in this version and that only the birth+ option appears (200 power)