Thank you. I was actually kind of lucky with what I manged to get in a first draft.
It was a mistake on my part that the puzzle wasn’t clearly explained. Only in the dragon's presence the rooms keeps their modified state. This makes you juggle exploring with simultaneous gate states - like multiple gates towards a single goal, that conflict with eachother at a first glance, as other puzzle games have done.
I ended up here, because I planned for more... guess I am in the loop too!