I noticed this in an app's changelog recently, saying something along the lines of "remove metadata comparison function because new Android versions no longer support it"

Thankfully F-Droid has a "never update this app" checkbox for now, but eventually I'm sure third-party developers will require minimum Android versions that mean I need to lose this functionality :/

Edit: found it, it was VesIC https://github.com/VincentEngel/VES-Image-Compare/releases/t...