Well that was a ridiculous rabbit-hole to go down. No one seems to know complete details, but here are some articles with information: https://www.space.com/spacex-crew-dragon-space-toilet-myster..., https://www.slashgear.com/spacex-crew-dragon-for-the-all-civ... (360 degree views while using it!?), https://www.digitaltrends.com/news/spacexs-crew-dragon-to-ge..., https://www.businessinsider.com.au/spacex-crew-dragon-spaces...