673934 - Hidden page reload when using empty background URL css property

Status: RESOLVED DUPLICATE of bug 339112

(Core :: DOM: Core & HTML, defect)

Description

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Attachment: Example of this bug (use live http headers addon)

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0
Build ID: 20110615151330

Steps to reproduce:

I created this page:

<style>
.obj {background:url('')}
</style>
<DIV class=obj></DIV>


Actual results:

Using "Live http headers" extensions I see that the page is loaded 2 times. This can cause big problems, for example setting random session variables with ASP pages.


Expected results:

It should have loaded just one time.

Comment 1

[Justin Dolske [:Dolske]]

I know there's a bug somewhere about this issue, similarly for <img src="">. ISTR that this is technically the correct behavior, but that other browser have changed to ignore it as being a common mistake.

Comment 2

[Mats Palmgren (inactive)]

Bug 339112 is the dupe target.   Bug 444931 fixed <img src="">.

Chrome 14 also loads it twice, IE 10 and Opera 11.50 does not.