[Description] Remove Web Apps' app from Apps folder, the remove confirmation page's button will moving instead of scaling while changing focus [Reproduce Steps] 1. Launch Apps -> Web Apps/Dev Web Apps 2. Add any app/website to Apps 3. Home -> Apps -> Press option key on step 2 added app 4. Press Remove button 5. Changing button focus on confirmation page [Build Information] Environment: 2.5 Simulator Gaia: https://github.com/mozilla-b2g/gaia/commit/e36230a7b19ef5525543ae234408869b38ca65a9 Gecko: https://hg.mozilla.org/releases/mozilla-b2g44_v2_5/rev/f505962eb58e48bac45f4cb6c663008eba61241a Mulet: https://hg.mozilla.org/releases/mozilla-b2g44_v2_5/rev/f505962eb58e48bac45f4cb6c663008eba61241a [Expected Result] Icon should just scaling Focused icon from 100% -> 120% De-focued icon from 120% -> 100% [Actual Result] Original button has moving animation instead of just scaling

Rex, should this be on your plate?

Cannot reproduce on neither b2g-desktop nor Mulet. Can you confirm the STR? or I can just go to you tomorrow.

Sure, you can come to me directly or consult with Joseph since he resolve the similar issue bug1241407 before

Assign to rex first to make sure it's moving. Feel free to redirect to others if you figure out the root cause.

(Removing from 1204762 because this reads to be a Gaia bug. Feel free to re-attach to tree if that's incorrect.)

Seems it's a Linux-only bug. I believe it's root cause is not inside Gaia.

Hi Peter: Is this a GFX issue on Gecko? For the Reproduce video, it's an element that is expected to just enlarge to 120%. The properties used are: transform: scale(1.2) transition-duration: 0.42s transition-timing-function: cubic-bezier(0.25, 0, 0, 1.0) And seems it's only broken on Linux. It works OK on my Mac.

Renominating 2.5? since it seems unaffected on partner's TV build.

(In reply to KM Lee [:rexboy] from comment #8) > Hi Peter: > Is this a GFX issue on Gecko? > For the Reproduce video, it's an element that is expected to just enlarge to > 120%. > The properties used are: > transform: scale(1.2) > transition-duration: 0.42s > transition-timing-function: cubic-bezier(0.25, 0, 0, 1.0) > > And seems it's only broken on Linux. It works OK on my Mac. Rex, are you able to reproduce it on firefox Linux? Or just in TV.

It's reproducible in v2.5 simulator in Linux. (See Description) I couldn't reproduce it on TV.

I think this is the same issue as bug 1239564.