Bug 212941

Summary:	Support fullscreen without user activation on the same path in single-page app
Product:	WebKit	Reporter:	cxxu
Component:	WebKit API	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal
Priority:	P2
Version:	Safari 13
Hardware:	Mac
OS:	macOS 10.15

Description cxxu 2020-06-08 17:14:19 PDT

Our app is a single-page app using react. The user will click a button on "app/pathA", then we transition to "app/pathB" and enter fullscreen on a div element in "app/pathB". 
This works well on Chrome (win and macOS), however doesn't work on macOS Safari. We're able to fullscreen "app/pathA" but not "app/pathB".
Can Webkit team add support for this use case?