559871 - Increase zooming on n900 can cause black lines in the page

Status: VERIFIED DUPLICATE of bug 468496

(Firefox for Android Graveyard :: General, defect)

Description

[Henrik Skupin [:whimboo][⌚️UTC+2]]

Attachment: screenshot

Fennec 1.1a2pre

If you have zoomed into the given page by double tapping on the device and click the Vol+ button once you will see a black line below the author's name. Looks like a layout problem.

Steps:
1. Open http://www.hskupin.info
2. Double tap on the screen to zoom in
3. Press the Vol+ button once to zoom in one more step

After step 3 you will see a black line. See the screenshot.

Comment 1

[Matt Brubeck (:mbrubeck)]

I'm not sure why, but I also see this black line at certain zoom levels in desktop Firefox (Linux trunk 3.7a5pre nightly) and in Chromium.

Comment 2

[Henrik Skupin [:whimboo][⌚️UTC+2]]

(In reply to comment #1)
> I'm not sure why, but I also see this black line at certain zoom levels in
> desktop Firefox (Linux trunk 3.7a5pre nightly) and in Chromium.

Mmh, shall we move it to layout then? Roc, does it sound familiar to you?

Comment 3

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Is it a regression?

Does it reproduce on Windows? I see it on Mac.

Could be a problem with Mac/Linux not supporting EXTEND_PAD properly, but I'm not sure.

Comment 4

[Henrik Skupin [:whimboo][⌚️UTC+2]]

I can't see it with Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.3a5pre) Gecko/20100416 Minefield/3.7a5pre ID:20100416030613 and the NVIDIA GeForce 9400M turned on.

Roc, which configuration do you have?

Comment 5

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Homemade trunk build, Mac Pro, 10.5.8. I seriously doubt the graphics chip makes a difference.

Comment 6

[Vivien Nicolas (:vingtetun) (:21) - (NOT reading bugmails, needinfo? please)]

Usually we resolve this bug as a duplicate of 468496.
Roc, did this make sense for you?

Comment 7

[Martijn Wargers (dead)]

Bug 468496.

Comment 8

[Robert O'Callahan (:roc) (email my personal email if necessary)]

That's probably right.

Comment 10

[Aakash Desai [:aakashd]]

dupe, v.