Comment 3 for bug 412166

I believe that I know the cause of the issue; the Bazaar icon is generated (in Firefox, anyway) by the following line:

<span alt="branch" title="Branch is available" class="sprite branch" />

Enabling resource tracking in Chrome developer tools, I see several errors popping up that read:

XML self-closing tag syntax used on <span>. The tag will not be closed.

I tried saving the source of the blueprints page to my desktop and manually modifying one of these span lines to read like the following:

<span alt="branch" title="Branch is available" class="sprite branch">&nbsp;</span>

When I load this test page, the Bazaar icon shows as expected (see attached screenshot). I'm not sure that this is the best solution, but I believe that it determines the source of the issue: self-closing tags on span are ignored by Chrome. I'm not sure what the (X)HTML spec says about self-closing spans -- is this a Launchpad bug for using them, or a Chrome bug for not closing them?