Apparently, there are a few glitches in certain parts of the game that caused certain things to not work.
I never encountered them on my playthrough (Even before the updates), but I know some people here did.
it;s not jsut "not work" it's soflocks, basically, the game won;t crash and your system won;t explode and do paper jam errors (sorry, I love this tittle too much forgive me).
But your game will actually run perfectly fine, it might not even seem to have glitched, but the reality is something made the game bot possible to progress. A good example is actually the glitch I found in TTYD
If you do the bookcase jump with the woodem hammer and pass the non existing vent, you cannot break the vent from the air duct leaving you stuck, but the game will run fine, the GC won't blue screen, it will just not be playable because it locked on the software level hence the name soflocks.
So, it's not jsut your typical graphical bug, it;s major.