I have found a bug with the Upload button.
When a user is visiting from the Facebook or Twitter in app browsers using Android, the upload button doesn't work. It's not even clickable - once clicked it doesn't perform any action to add a photo from the phones gallery etc.
When the user visits on normal android phone google browser, it works absolutely fine.
Just not when inside the Facebook, Twitter, or Messenger browser.
I did report this a while ago but no one done anything or even got back to me about it.
Help me please.