857282 - Canvas overflow not clipped properly by Firefox

Status: RESOLVED DUPLICATE of bug 854873

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[zen121790]

Attachment: maTest3.htm - simple demo to reproduce bug.

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:11.0) Gecko/20100101 Firefox/11.0
Build ID: 20120310193444

Steps to reproduce:

Tested a website under development on Android Firefox (Galaxy Tab 2 tablet) and found that the overflow of a canvas contained by a div with overflow:auto is not clipped properly.

I have created a simple web page which reproduces the problem and which I attach.


Actual results:

On the desktop (and on the tablet testing with Chrome) the canvas is clipped correctly. That is to say that if the canvas width exceeds the div width:
1. The canvas content does not overflow the border of the div.
2. You can scroll the canvas inside the div.  
With Firefox the canvas content overflows the div.


Expected results:

Android Firefox should behave as on the desktop (and as Chrome).

Comment 1

[koehler]

We're experiencing the bug with some canvas based charts, and it seems that the canvas is drawn above anything except elements with "position:fixed".

Comment 2

[Aaron Train [:aaronmt]]

(In reply to koehler from comment #1)
> We're experiencing the bug with some canvas based charts, and it seems that
> the canvas is drawn above anything except elements with "position:fixed".

Have you tried Nightly to see if this is fixed? (http://nightly.mozilla.org) for Android. This sounds a bit like bug 854873 which is fixed.

Comment 3

[koehler]

Just checked the nightly build and it works like a charm. Thanks for the heads up.