Kinda hard to explain but the main body of the game is 9 sections using different characters with 4 of them just being scripted sequences. One of them (Retsu) literally just requires you to move back and forth between a few screens doing nothing until a hand grabs the screen and the sequence ends but in ScummVM it never triggers and you just move between the screens endlessly with nothing happening.
I've recreated the same bug both after completing the other 8 characters' sections first and after starting a new game and doing it immediately. Pretty sure it's not user error or an issue with my copy of the game either because I wrote the only walkthrough of it on Gamefaqs back in 2012 with the same copy of the game running on a Windows 95 virtual machine
Anyone got any ideas? Thanks