937198 - Clipping/displayport issues when scrolling a subframe with a keyboard

Status: RESOLVED DUPLICATE of bug 933264

(Firefox for Metro Graveyard :: Pan and Zoom, defect)

Description

[Matt Brubeck (:mbrubeck)]

Attachment: test case

Steps to reproduce:
1) Load a page with a scrollable subframe, like the attached test case.
2) Touch and drag to scroll the subframe.
3) Then, use the arrow keys or pgup/pgdown to scroll the subframe.

Results: The content of the subframe does not scroll, and instead appears to be clipped incorrectly (regions of the frame replaced with white).

Comment 1

[Matt Brubeck (:mbrubeck)]

Attachment: screenshot

Comment 2

[Matt Brubeck (:mbrubeck)]

Maybe related to bug 933264.

Comment 3

[Jim Mathies [:jimm]]

Tentatively marking as a rollout blocker, but I could be persuaded to not do so. This feels a bit corner case, but for user who navigate via the keyboard it's a deal killer on using the browser.

Comment 4

[Timothy Nikkel (:tnikkel)]

The clipping issue should be fixed by bug 933264. We probably still won't async scroll these types of elements until bug 939239 is fixed though.

Comment 5

[Matt Brubeck (:mbrubeck)]

Confirmed this is fixed by bug 933264.

Comment 6

[u279076]

Kamil, can you please verify this is fixed?

Comment 7

[Kamil Jozwiak [:kjozwiak]]

Went through the following verification process using the following builds:
- http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2014-02-20-03-02-02-mozilla-central/
- http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2014-02-20-00-40-01-mozilla-aurora/
- http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/28.0b4/win32/en-US/

- Ensured that you can scroll through the subframe via touch gestures
- Ensured that you can scroll through the subframe via the mouse via the scroll bars
- Ensured that you can scroll through the subframe via the arrow keys (up, down, right, left)
- Ensured that you can scroll through the subframe via the Page Up & Pade Down keys
- Ensured that the scrolling looked smooth without any jank or flickering
- Ensured that all of the above test cases worked with different variations of snapped view