I recently lost 2 days troubleshooting an iOS 13 Safari bug: It just froze, when it got certain html. Wasn't possible to connect a debugger. Never seen that in a browser before.
FF, Chrome: all fine, page rendered correctly.
(I had to bisection-comment out half the html page and so on, until I found out what made Safari freeze. The problem: Radio buttons in separate divs but not wrapped in separate forms, killed Safari.)
