Steps to reproduce:
1. On iPhone, open Safari
2. In Safari, open a game entry on thegamesdb.net
3. Click Edit
4. Click Upload Images
5. Click Upload Front
6. Click Select Files
7. Click Take Photo
8. When Camera loads, take photo
Expected result: Usual popup for uploading photo appears
Actual result: Upload popups disappear
Workaround: Take photo in Camera app, then upload from Photo Library
It's certainly not out of the question that there's an unreported defect in the PHP stack.
As you have the device experiencing the issue in question, may I ask you to install a different browser - say, Opera, Firefox, or Chrome - temporarily to see if the issue replicates across them?
If it's Safari 11, I came across this:
https://www.google.com/search?q=safari% ... %20problem
Hopefully, this is something we can code around, but if it's at the browser level for Safari, its proprietary nature means that we're almost certainly not going to be able to directly address this issue until Apple developers push a patch.
If you have a new public project, please provide a link to it so we can highlight cool new applications!