Bug 267743

Summary: iOS 17.2-18.3.1 beta Fullscreen API Preview - Unexpected Fullscreen API behaviors
Product: WebKit Reporter: Byungseon(Sun) Shin <sun.shin>
Component: WebKit APIAssignee: Byungseon(Sun) Shin <sun.shin>
Status: RESOLVED DUPLICATE    
Severity: Major CC: fred.wang, jameshoward, possum.bracing0v, webkit-bug-importer
Priority: P1 Keywords: InRadar
Version: Safari 17   
Hardware: iPhone / iPad   
OS: iOS 17   
Bug Depends on:    
Bug Blocks: 206854, 276855    
Attachments:
Description Flags
FullScreen-Message-While-Touching-Event
none
Additional Full Screen Alert Message none

Byungseon(Sun) Shin
Reported 2024-01-18 17:25:25 PST
When we tried applied the Fullscreen API behavior applied on the full screen mode of the Cloud gaming using the iOS Beta 17.2 or 17.3 we were getting a prompt often which said “It looks like you are typing while in full screen”. I believe this Phishing message could be shown at first time, but once user want to stay the page, it shouldn't be shown up again.
Attachments
FullScreen-Message-While-Touching-Event (4.05 MB, image/png)
2024-01-18 17:27 PST, Byungseon(Sun) Shin 		no flags
Details
Additional Full Screen Alert Message (1.11 MB, image/png)
2024-01-23 14:38 PST, Byungseon(Sun) Shin 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Byungseon(Sun) Shin
Comment 1 2024-01-18 17:27:56 PST
Created attachment 469448 [details] FullScreen-Message-While-Touching-Event
Byungseon(Sun) Shin
Comment 2 2024-01-18 17:51:58 PST
Pull request: https://github.com/WebKit/WebKit/pull/22953
Byungseon(Sun) Shin
Comment 3 2024-01-23 14:38:24 PST
Created attachment 469515 [details] Additional Full Screen Alert Message
Byungseon(Sun) Shin
Comment 4 2024-01-23 14:40:28 PST
As discussed through PR#22953, proposing adding new options to get user's approval to allow the full screen with touch events.
Radar WebKit Bug Importer
Comment 5 2024-01-25 17:26:13 PST
<rdar://problem/121633265>
Jeffrey Blanz
Comment 6 2024-04-26 07:27:50 PDT
(In reply to Byungseon(Sun) Shin from comment #1) > Created attachment 469448 [details] > FullScreen-Message-While-Touching-Event How did you manage to play Geforce Now on a iPhone with Fullscreen API enabled? Considering (1) it is a feature flag that is default off, meaning enabling it will not affect PWAs and (2) Geforce Now does not allow you to play in the safari app, you get hit with a "add to Home Screen" prompt. Also on iPadOS with fullscreen API enabled in the Geforce Now PWA, touch events are allowed.
Frédéric Wang Nélar
Comment 7 2026-10-14 09:58:36 PDT
I'm marking this as a duplicate of bug 205917 which is older and has a more explicit title. Will forward some info there. *** This bug has been marked as a duplicate of bug 205917 ***
Jeffrey Blanz
Comment 8 2026-11-04 06:36:33 PST
I do not think this is a duplicate of Bug 205917. This bug is for the fact that you cannot swipe down or use other touch gestures with fullscreen API on iOS. A swipe down exists fullscreen. If you are playing a touch mobile game on the web you will not be able to stay in fullscreen.
Note You need to log in before you can comment on or make changes to this bug.