Oh sorry for the bug, I saw the same on my girlfriend's PC already, but then tested on mine and nothing appeared. I took it for granted.
It is definitely to do with sequence resetting for no reason to the beginning (I suppose where walkthrough is good haha)
Hahaha, very good job finding the gear interaction on the lying robot hand, I wouldn't even think to try to put it there!
In fact, graphic resource consumption can be reduced by adding graphics settings. The next thing I will do for sure!
Big thank you for the nice review, it does help to understand the future potential!