This is just something I noticed on Dozer's route, but the MC's room at the shelter keeps changing between the fully colored room without the I.D.E.K.A. 2016 poster, and the black and white sketch like room with the I.D.E.K.A. 2016 poster, and it's both during the strange dreams and not during the strange dreams, is that just something overlooked, or is there a reason for it?
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Dyne is reprogramming all the game with new sprites and backgrounds (that appears on the first day), that will happen very often (changing between backgrounds and sprites) until everything is polished (with the new sprites and background).
Till then, it's going to be mixed between old and new at some point of the game.
The housekeeping updates is just for that, cleaning the code and rework the days. When finished the housekeeping (and one of the route end) whats going to probably happen is that Richard is going to replace the housekeeping schedule.
Hope this help you understand.