Please fill out the following sections to the best of your ability, it will help us investigate bugs if we have this information at the outset. Screenshots are especially helpful, so please provide those if you can.
Platform (Android, iOS, Website): iOS
App version number, if a mobile app issue (shown under Settings or About): 3.2.6
Browser, if a website issue (Firefox, Chrome, etc) :
This happened to me too a few days ago, too. Though I ascribed it to the fact that I was trying to delete the versions of the photos I’d already uploaded so I could re-upload new versions of the files which had been brightened a little. It also spawned duplicates and re-ordered the pictures on the observation. I tried deleting the app (iOS) and reinstalled, but it kept happening, so then I gave up and fixed my observation on the desktop browser. I figured it just couldn’t handle the same file names, so it’s interesting to hear you might not have had that confounding variable.