1641814 - The tab switch warning is also displayed when clicking on an already visually sharing tab from another window

Status: NEW

(Firefox :: Site Permissions, defect, P3)

Description

[Daniel Bodea [:danibodea]]

Attachment: incorrectly displayed warning.webm

Note

• The tab-switch-warning is incorrectly displayed for a tab of another window that is already in the viewport on the screen.

Affected versions

• Nightly v78.0a1
• Beta v77.0 (RC)

Affected platforms

• ALL

Steps to reproduce
Required prefs:

• Flip privacy.webrtc.allowSilencingNotifications to true
• Flip privacy.webrtc.legacyGlobalIndicator to false
• Flip privacy.webrtc.sharedTabWarning to true

1. Engage in a WebRTC meeting.
2. Have another window on the screen that you'll be sharing.
3. Share the whole screen.
4. Click on a different tab from the same window to skip the first tab switch when the warning is not shown.
5. Click on the focused tab from the other window from the screen.

Expected result

• The tab-switch-warning is not displayed.

Actual result

• The tab-switch-warning is displayed, even though the tab was already sharing the content of that tab.
• The tab can properly be used for navigation, but when clicking the tab area, the warning gets displayed.

Regression range

• This is a feature implementation issue.

Comment 1

[Daniel Bodea [:danibodea]]

Attachment: incorrectly displayed warning.gif

Comment 2

[Paul Zühlcke [:pbz]]

I can still reproduce this on latest Nightly. However privacy.webrtc.sharedTabWarning is still behind a pref.