871504 - Inspector adds a negative margin-left on reload of http://robot-or-not.com/

Status: RESOLVED WORKSFORME

(DevTools :: Inspector, defect)

Description

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User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0
Build ID: 20130409194949

Steps to reproduce:

I load http://robot-or-not.com/ then right clik to examine the source code with the firefox devtools select the html tag to see that the inline declaration is empty then reload the page (with ctrl + r or with F5 )


Actual results:

When the page is reloaded, the html element has an inline property declared in the devtools "margin-left: -32767px;" which is not declared at the initial load.



Expected results:

The devtools should not add this negative margin-left on reload

Comment 1

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Attachment: Devtools inspector at initial load

Comment 2

[[e-mail]]

Attachment: Devtools inspector after reload

Comment 3

[Mathieu Pillard [:mat]]

Note that the rule isn't actually applied - it's just shown in the style inspector.

Digging a little, there is a script on this page, css3-mediaqueries.js, that adds the margin-left -32767px and then removes it dynamically, so I suspect it's acting too fast for the inspector to notice, or some other race condition.

Comment 4

[arni2033]

I can reproduce this with Fx20.0 but not with Fx39.0. This bug should be closed

Comment 5

[Loic]

Indeed.