610337 - Console keeps throwing same CSS parser warnings repeatedly when loading mozilla.org in an iframe

Status: RESOLVED INVALID

(DevTools :: General, defect)

Description

[Maniac Vlad Florin (:vladmaniac)]

Attachment: test page

Build ID: 

Mozilla/5.0 (Windows NT 6.1; rv:2.0b8pre) Gecko/20101103 Firefox/4.0b8pre

Steps: 
1. Load http://mozilla.org in an iframe (try with attached test page)
2. Open Console and reload the page 
3. Open a new tab and load http://mozilla.org 
4. Open console here and inspect the network events, warnings

Behavior: 
When load in an iframe, console goes echoes same warnings repeatedly, like in some kind of infinite cycle. After step 4 you can confirm that these warnings do not appear if http://mozilla.org is loaded normally. 

Not sure what causes this, what is certain is that it didn't happen before while testing with the same page. 

The same thing happens with http://www.universityhealth.org/body.cfm?id=38115, what is different are the warnings, and it can't be always reproduced. 

See screenshot

Comment 1

[Maniac Vlad Florin (:vladmaniac)]

Attachment: screenshot

Comment 2

[Kevin Dangoor]

Mihai: can you triage this? I'm inclined to think that this isn't a problem with the web console, but we should figure out where the right component is for this at least.

Comment 3

[Mihai Sucan [:msucan]]

I cannot reproduce the bug. I see some CSS parser errors, but they are not repeated in a loop by the Web Console.

I get the same result when I use the test case provided, or when I load mozilla.org directly. No looping, same CSS errors, no differences.

Please note that the CSS errors only show when the animation of the featured project is played. There's a JS-based timer which plays it, not too often. Thus, the errors are expected to be repeated whenever the site causes them - they show up in the Error Console as well.

(tested with Ubuntu 10.04)

Vlad: can you still reproduce the issue?

Comment 4

[Maniac Vlad Florin (:vladmaniac)]

You are right Mihai, CSS parser errors occur due to the animation presenting mozilla's projects. Each time a picture fades away, console echoes the warnings. It is quite annoying though.

Comment 5

[Kevin Dangoor]

Thanks for the investigation here. It sounds like the warnings are legitimate, then (even if they are annoying).