Some other bugs found...
1) If you end the "Missing Sippy" quest (that means clearing lvl 6 of the Hole) your statistics on the computer of the room keep saying "Hole floors cleared: 5/5". I don't know if it's due to that (a wrong update of the cleared floors), but if you return to the Hole after having been on lvl 7, you always return back to level 6. Even if it's 100% cleared, you always have to go across level 6 and use the exit elevator to return to level 7. That means: 1 day in level 7, next day in level 6 (nothing to do but go to the exit), next day level 7, next day back in 6...
2) You have a deadline of a (game) week to end "Missing Sippy" and meanwhile you cannot confess with Aiyana because she saids she misses her Sippy. But if you rescue her before, she keeps saying the same even though the quest is finished and Sippy can be found at Hartford.
3) The "random" room numbered 7 on the 7th floor of the Hole has a "random" bug: the gates don't disappear after you defeat the enemies so you are not able to leave anyway (but reseting the game). The prison-room 7 only happens when you enter coming from the 6th room and you find two walking-girls (not the shot ones) and a chest. As far as I know, it never happens coming from the 2nd room so I never go in a against-the-clock order (this bug happened to me 3 times so it is not just casual).
4) Not very important: the total number of gold coins you can get is 999. Any other coin collected after reaching this top is not considered into your account
...there are even more but that is enough for the moment