1) When U open the Journal and the Note right after this (they something like booth open at the same time), then U close the Note, but U can't close the Journal, because the back button disappeared. There is a solution without loading previous save, U must only chose from menu and open the journal again, than the button will be visible.
2) At the end of Supercollider U can make a situation that U can go up to last switch without a plate, like the plate was there but invisible.
3) The could be a option to delete a single savegame position.
I'm now 100% achivements in all steam games from WadjetEyeGames, the I will test the steam cloud for all of them - sorry that I drain again this thing, but this option is really useful
Also maybe I should prepare savegame from @2