1523248 - Preview of private tab remains after closing the tab

Status: NEW

(Firefox for iOS :: Browser, defect, P3)

Description

[lazarencjusz]

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36

Steps to reproduce:

1. Open private tab
2. Go f.e. youtube.com od watch any movie fullscreen.
3. Set phone horizontaly
4. Exit to home
5. Set phone verticaly
6. Doubletap home button (possibly you may notice the bug now, full screen preview of movie, if not, contunue next steps)
7. Move phone horizontaly (possibly bug here)
8. In vertically position Close browser
9. Run browser again
10. If bug not appear move phone horizontaly

Actual results:

The full screen of played movie is visible (in apps list of iOS after doubletap home button) after rotating phone on homescreen, even when it is private tab, and even the tab is closed

Expected results:

There should not be movie preview if it is (at least) private tab

Comment 1

[Simon Basca [:SimonB]]

I am seeing this behavior also after:

1. Open private tab
2. Go f.e. youtube.com and watch any movie fullscreen.
3. Double tap home button

The full screen video is not obfuscated in app switcher. I suspect that this is because the video is opened in the native iOS which is not under our control. Also note that this behavior is also present in Safari.

Garvin, is there anything actionable here?

Comment 2

[:garvan]

Yeah the fullscreen player is a special iOS built-in thing and I don't see how to blur the screen easily.
We can discuss in triage what to do with this going forward.