Luckily, some Bugs seem to be gone, but new ones appear...
HEAVY/MAJOR BUGS:
1) MAV caused by something that I find when getting out of the Maintenance Tunnels
I got a MAV when getting out of the Maintenance Tunnels and I don't know why, that's all... I saved a second before the MAV, luckily. (plus SCP-513-1 spawned on me in the elevator, he was perfectly still until I moved away from him)
I don't know if I got the MAV because I was near a new room that caused it, or if the escape from the Maintenance Tunnels themselves made the MAV appear... (I got the MAV when making some steps of the elevator when it got back on the surface...)
EDIT: I tryied to re-load the save where I saved outside of the elevator and I heard whisper-like sounds that I did not hear before, maybe they are part of a new room/event that caused the game to crash: after some seconds I got a MAV again (reallly similar to the old MAV with the guard that enters the elevator in the first relase of v0.8.2, now fixed...)
So, I think that the MAV is caused by the place/entity related to those sound and not by the Maintenance Tunnels themselves...
EDIT 2: Apparently, it seems that those sounds are not related to an entity, because I heard them in a common four-way-corridor in the Heavy Containment Zone and nothing happened; I still don't know why I got the MAV...
2) SCP-106's containment is strange...
Apparently, something kept moving away my camera when I was trying to pull down the lever to re-contain SCP-106; but I contained him.
But, like 40 seconds after I've contained him, I just saw him appear in front of me in the corridor where he stops and looks for the player...
MINOR/RARE BUGS:
1) Checkpoint Rooms' revenge
In the Heavy Containment Zone I usually find Checkpoint Rooms that lead to the VOID (the nothingness...); this is an old Bug that I found even in older versions of the game, like v0.8.2.
Apparently it has not been fixed yet...
2) MAV when blinking near the Small Testing Room
I was in the Small Testing Room, where I got a "Level 2 KeyCard" and the navigator, then I succesfully escaped from 173. After a while I decided (for some strange reasons... ) to enter the room again and 173 teleported in the room with me, making the same sound effect when he breaks the glass, killing me. Plus, when I got back after reloading the game, I blinked near the room and the game gave me a MAV for no reason! (it happened only once...)
3) SCP-173 cheats
SCP-173 ( ) spawned in front of me in a three-way-corridor in the Light Containment Zone, he came out of nowhere! (I heared him moving and stopping continuously for some seconds befor he appeared...)
Plus, he got somehow in the elevator with the blood splatters on it, he was looking at the wall when I found him: that really scared me! It was SOOO creepy... (maybe, due to that, it could be a new scripted spawn for him because a creepy sound effect played when I saw him in the elevator. I hope I'm right...)
And in the room where he kills the two guys after the intro, he teleported in the air in front of me: he was down and he got up with THE MAGIC POWER OF GLITCHES! (I was in the angle of the room, near the door...) I heard him "dancing" before he teleported, exactly like he did when he teleported from nowhere in the three-way-corridor... (maybe this strange sounds are a sign that he is going to glitch... )
I hope this will be useful...
I found all these bugs on v0.9.
BUGS THAT WERE NOT BUGS:
Spoiler