Blank Popups for adding issues

New install of 7.0.0 (1) and having a strange issue. When I try to add an Issue using the popups, the popup opens as expected, but the contents fades away leaving a white screen.

It has to be a php issue (I guess) but when I inspect the popup there is no error.

is this when you’re editing an encounter?

Correct. When trying to edit an encounter.

can’t reproduce, if there’s nothing in the browser debug console, you could try clearing the browser’s cache in case it’s using an old php script

It turned out to be Cloudflare Rocket Loader and/or their BOT tool.