828167 - Animation jank on http://www.intel.in/content/www/in/en/homepage.html (compared to IE10 RC)

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[Mayank Bansal]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20130108 Firefox/21.0
Build ID: 20130108033457

Steps to reproduce:

1. Start a fresh profile
2. Go to http://www.intel.in/content/www/in/en/homepage.html
3. Hover mouse over the big "MENU" button



Actual results:

The initial animation/sliding effect  is jerky. So that the overall animation looks like a two step animation.
Repro with HWA on and off. Repro in FF15. Repro in Opera12.12
The CPU usage is minimal (10-20%) during animation. So its something else.

The same STR in IE10RC gives a fluid animation/sliding effect.



Expected results:

Smooth animation.

Comment 1

[(mostly gone) XtC4UaLL [:xtc4uall]]

FWIW, Chrome and Opera show the same Behavior.

Comment 2

[Mayank Bansal]

So this "jerky/two step animation" is the *intended* behaviour ?

Comment 3

[(mostly gone) XtC4UaLL [:xtc4uall]]

Well, someone would have to give this an Analysis and make action derived by it - as usual :-)

Maybe the Site is doing something stupid making Browsers behave as is.

I for myself can repro the Issue back using
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.0.19) Gecko/2010031422 Firefox/3.0.19 ID:2010031422

Comment 4

[Mihai Morar, (:MihaiMorar)]

Same behavior on Latest Nightly (2013/14/01). Looks like something works wrong on this Site as long is reproducible on Opera and Chrome too.

Comment 5

[Swarnava Sengupta (:Swarnava)]

is it still happening? mine is okay with Firefox 21 beta 2

Comment 6

[(mostly gone) XtC4UaLL [:xtc4uall]]

(In reply to Swarnava Sengupta (:Swarnava) from comment #5)
> is it still happening? mine is okay with Firefox 21 beta 2

The Menu changed. Thus this is probably INVALID now :-/

Comment 7

[Swarnava Sengupta (:Swarnava)]

Feel free to Open this bug, if this problem is reproducible with latest Firefox Beta!