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Since the update to iOS 17, the pictures in our virtual tours randomly turn very dark and high contrast. They are shown in a canvas so it looks like the entire canvas content is being manipulated. However nothing in our code does this, it happens very randomly (not in every picture and also not in the same pictures every time) and it's only in iOS 17 (not in other iOS versions, not on iPadOs, Mac, Windows, Android, ...). We tried debugging for hours and hours but nothing indicates that this is caused by anything in our code. To try it out yourself: visit https://youreka-virtualtours.be/tours/vyncke_buhler (on mobile of course). Screenshot shows what I mean. Sometime you have to click around randomly. Left screenshot in the side by side is after refresh. You can also see the effect disappears when looking at the browser tabs overview.