In Unforeseen Consequences, after crawling through a duct into a mainframe computer room, according to a walkthrough (and playing the original Half-Life) there is suppose to be a “tipped-over mainframe” you use to climb through a hole into the next section.
BM-BUG: The first time I got to the area and took care of the enemies, there was NO mainframe below the hole in the wall you need to climb thorough :brow:
Reloaded the save before I entered the duct.
This time, when I got to the wall with the hole, there WERE 2 mainframes BUT they were NOT tipped-over AND they disappeared when I approached