My Google photos was doing the same thing. I deleted the app. Then I searched Google for an older copy (perhaps original version) of Google photos. I downloaded the Google photos APK file and installed it. No more yellow photos. But Google photos will update automatically and return to the yellow photos unless you turn off "auto updates" for your apps. I just update my apps manually by selecting "update all" now and then and then quickly pressing the X to cancel the Google Photos app...in order to keep the original Google photos and the nice bright, non-yellowing photos. Maybe you can do the same with Samsung Gallery or just used Google Photos as I do.
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