Build id : Mozilla/5.0 (Android;Linux armv7l;rv:7.0a1)Gecko/201100601 Firefox/7.0a1 Fennec/7.0a1 Device: LG Optimus 2x OS: Android 2.2 Steps to reproduce: 1. Open Fennec App 2. Go to about:home 3. Open any webpage in a new tab 4. Pan right for tabs panel 5. Tap on about:home tab 6. Pan left to hide tabs panel Expected result: about:home page is repainted correctly . Actual result: After step 6, for several seconds some areas of about:home page are semi transparent. Please see the attached screenshot.

I've noticed the same result if at step 2, you go to about:testharness

This issue doesn't occur on: Build id : Mozilla/5.0 (Android;Linux armv7l;rv:7.0a1)Gecko/20110527 Firefox/7.0a1 Fennec/7.0a1 http://hg.mozilla.org/mozilla-central/rev/503990b2c5c6 but it occurs on: Build id : Mozilla/5.0 (Android;Linux armv7l;rv:7.0a1)Gecko/20110528 Firefox/7.0a1 Fennec/7.0a1 http://hg.mozilla.org/mozilla-central/rev/9260bd59d5ce Possible range: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=503990b2c5c6&tochange=9260bd59d5ce

Regression from the Cairo update?

(In reply to comment #6) > Regression from the Cairo update? That was my guess too

The following change set is good 20110720181347 https://hg.mozilla.org/mozilla-central/rev/503990b2c5c6 The following change set is bad 20110715150747 https://hg.mozilla.org/mozilla-central/rev/04e8d0b481bc So the Cairo update is the problem.

jmuizelaar, do you know about this?

Reproducable by simply panning around about:home

I feel like bug 665510 is related or exactly the same issue here

not tracking for 7 at this point, depending on the fix we may uplift

Can folks reproduce this reliably? I've seen it a bit, but nothing reliable.

(In reply to Jeff Muizelaar [:jrmuizel] from comment #13) > Can folks reproduce this reliably? I've seen it a bit, but nothing reliable. Really all you need to do is pan around, (reproducible in Nightly 08/12)

I can also reproduce this by panning around about:home.

When I type something in the AMO search field, a black dash is displayed on the bottom of the input field . I'm able to reproduce it on the latest Nightly build. Is it related to this bug? -- Build id : Mozilla/5.0 (Android;Linux armv7l;rv:8.0a1)Gecko/20110815 Firefox/8.0a1 Fennec/8.0a1 Device: HTC Desire Z OS: Android 2.3.3

It looks like the patch on bug 668921 might fix this.

Can anyone still reproduce this since bug 668921 landed?

Appears that the patch for bug 668921 fixed this. Panned around about:home for a few minutes without seeing any painting issue. Tested Aurora and the issue appeared after a short amount of panning.

Verified fixed on: Mozilla /5.0 (Android;Linux armv7l;rv:7.0) Gecko/20110824 Firefox/9.0a1 Fennec/7.0 Device: LG Optimus 2X