This is a regression caused by http://trac.webkit.org/changeset/166514 In making checkboxes and radio buttons share code, I accidentally used checkbox metrics in two spots for radio buttons as well. Miraculously, this does not seem to have effected the rendering is any obvious way, but we should still fix it.
Created attachment 229082 [details] Patch
Comment on attachment 229082 [details] Patch Because I can't not have a nit, I'd move the "const int* controlMargins" line down below the zoomedSize.setWidth and zoomedSize.setHeight lines. But r=me. :)
This seems to landed and not backed out: https://github.com/WebKit/WebKit/commit/35462e5d6da95e2a904486feba09884d4bb9cc8e Marking as "RESOLVED FIXED". Thanks!
<rdar://problem/100827126>