We embed our instant apps in websites and have had a couple of issues with the focus. If anyone knows how to fix these, please let me know. One the focus indicator jumps to the app if it is in the view at all, which violates WCAG. I tried doing disable_window_focus, but it doesn't seem to work. Second, the user gets trapped in the splash screen when tabbing through it. I tried putting in enhancement requests but they were deemed "out of scope". For now, we had to take off the splash screen. This is only short term since we tell our users important information in there.