Oana Botisan, Desktop QA Reporter
	Description • 6 years ago

[Affected versions]:
- Firefox 61.0
- Dev Edition 62.0b2
- Nightly 62.0a1

[Affected platforms]:
- Windows 10 x64
- Ubuntu 16.04 x64
- macOS 10.13

[Steps to reproduce]:
1. Go to this site https://9gag.com/
2. Open DevTools - > Storage (Shift + F9)
3. Navigate through the second panel using the arrows from keyboard.

[Expected result]:
- The highlighted element is always visible and the page scrolls down at the same time with the highlighted element.

[Actual result]:
- When the highlighted element reaches the bottom of the page, it disappears. If the page is manually scrolled then you can see how the navigation progresses.  

[Regression range]:
- I don't think it's a regression.

[Additional notes]:
- Please look at the attachment to see the bug reproducing.

	Oana Botisan, Desktop QA Reporter
	Comment 1 • 6 years ago

I investigated the issue more and I found a regression.

- last good: 20160323030400 (2016-03-23)
- first bad: 20160324030447 (2016-03-24)

- pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=efe7d026ac641759838dd3897c37892e37e5b244&tochange=6202ade0e6d688ffb67932398e56cfc6fa04ceb3

Bug 1154183 might be the cause of this issue.