Note

• setup needs a wireless connection between TV and PC (Wireless Display - Miracast);
• To verify Miracast support on the computer, select Start icon Start → Connect. The Connect app will advise if your Windows 10 computer allows screen mirroring.

Affected versions

• 80.0b1, 81.0a1 (2020-07-27) ;

Affected platforms

• Windows 10;

Steps to reproduce

1. Launch Firefox, access Youtube start any video;
2. Start up your TV;
3. Connect PC to TV;
4. Play any video on Youtube, zoom in/out a couple of times;
5. Close TV - disconect;
6. Reset zoom scaling (quick way - press CTRL+0 on the keyboard);

Expected result

• browser and page displayed as before the screen cast ;

Actual result

• scroll bar for Youtube page is double its initial width;

Regression range

• will check and provide a range asap;

Additional notes

• attached screenshot with the issue;
• after a browser restart the issue is no longer encountered;
• S4 severity due to the edge-case nature;

(In reply to Cristian Fogel, QA [:cfogel] from comment #0)

4. Play any video on Youtube, zoom in/out a couple of times;

Could you confirm what method you are using to zoom (e.g. Ctrl+Plus, pinch gesture, etc.)? If you're using a pinch gesture, is apz.allow_zooming set in about:config?

Methods used: CTRL+Plus & CTRL+ScrolWheelZoom.
apz.allow_zooming - appears to be set to false.

(In reply to Cristian Fogel, QA [:cfogel] from comment #2)

Methods used: CTRL+Plus & CTRL+ScrolWheelZoom.
apz.allow_zooming - appears to be set to false.

Thanks -- so this is an issue with reflowing-zoom rather than pinch-zoom. I think we've been using the Layout component for such issues (though it may be useful for them to have a component of their own).

The component has been changed since the backlog priority was decided, so we're resetting it.
For more information, please visit auto_nag documentation.