Due to a difference in the interpretation of the historical documents in which the reconstructed image was based upon, "Ogawagosho narabini Higashiyamadono Okazarizu" within "Muromachidono Gyoko Okazariki," there was a theory that stated that the master bedroom did not have the built-in oshiita but oshiita that was simply placed there.
また、復元図のもとになった史料、『室町殿行幸御餝記』、『小河御所并東山殿御餝図』の解釈のちがいにより、主室にあったのはつくりつけの押板ではなく置押板である、という説もある。