Created attachment 8548439 [details] test case User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0 Build ID: 20141205181342 Steps to reproduce: I used the unicode "MEDIUM BLACK CIRCLE" character (U+26AB) in a paragraph with "font-style: bold". Actual results: The circle character gets replaced by a much bigger bullet image and the paragraph has huge top-margin compared to a paragraph with "font-style: normal". This doesn't happen in the desktop version of Firefox. Expected results: The circle character shouldn't be rendered as bullet image and the element margins shouldn't change.
Note this page is affected by font inflation.
Is the same thing reproducible on desktop? Might be a core Gecko related. I see what the reporter sees albeit slightly different on my Nexus 6 (5.0.1).
No, this is not reproducible on desktop. It only shows on Firefox Mobile.