(In reply to Chenxia Liu [:liuche] from comment #0) > Created attachment 8588219 [details] > Screenshot: Off-center "Themes" label What build were you running and did you have a lightweight theme enabled? The blank space you're seeing is supposed to have a thumbnail of the selected lightweight theme (or a placeholder graphic if one isn't selected). This just got tweaked recently in bug 1139949, so this may be a regression from that.
I did have a lightweight theme selected, but it looks like it's broken and doesn't have a thumbnail.
Can you share which lightweight theme you had selected?
Created attachment 8588681 [details] Screenshot: Old theme (not working on mouseover) Hah, sorry, I should have done that earlier. It looks like an old version of Firefox B ( https://addons.mozilla.org/en-US/firefox/addon/firefox-b/ ), but I was also able to install the new version. Attached a screenshot where I have both installed, and one of them isn't working.
Hmm, I looked on AMO but I don't see a way to install an older version of the theme. Can you inspect the popup and either take a screenshot of the fully-expanded DOM node for that item or copy/paste the outerHTML here?
Jorge, is there some way to find an older version of a theme on AMO?
No, I think the files are just replaced when a new version is uploaded. Wil might know for sure.
Liuche sent me this snippet showing what the markup is for this theme: > <toolbarbutton class="customization-lwtheme-menu-theme" label="Firefox B" image="https://addons.cdn.mozilla.net/_files/15114/preview_small.jpg?1229632195" tabindex="0" aria-checked="true" role="menuitemradio" active="true"> > <xul:image class="toolbarbutton-icon" xbl:inherits="validate,src=image,label,consumeanchor" label="Firefox B" src="https://addons.cdn.mozilla.net/_files/15114/preview_small.jpg?1229632195"></xul:image> > <xul:label class="toolbarbutton-text" crop="right" flex="1" xbl:inherits="value=label,accesskey,crop,wrap" value="Firefox B"></xul:label> > <xul:label class="toolbarbutton-multiline-text" flex="1" xbl:inherits="xbl:text=label,accesskey,wrap" text="Firefox B"> > Firefox B > <html:span anonid="accessKeyParens"></html:span> > </xul:label> > </toolbarbutton> Note that the URL for the icon returns a 404. We could supply a fallback background but in this case, the theme is busted regardless. So I'm not sure what benefit we are getting besides cosmetically covering up some other bug.