After r83322 we split span in editing/pasteboard/paste-xml.xhtml on non-Mac platforms.
e.g. http://build.webkit.org/results/GTK%20Linux%2064-bit%20Debug/r83324%20(21264)/editing/pasteboard/paste-xml-diffs.txt - RenderInline {span} at (0,0) size 140x28 + RenderInline {span} at (0,0) size 69x28 RenderText {#text} at (14,14) size 69x28 text run at (14,14) width 69: "foo bar" - RenderText {#text} at (83,14) size 31x28 - text run at (83,14) width 31: "bar" + RenderText {#text} at (83,14) size 31x28 + text run at (83,14) width 31: "bar" + RenderInline {span} at (0,0) size 40x28 It seems like we're incorrectly splitting a span with id attribute.
Committed r83336: <http://trac.webkit.org/changeset/83336>
http://trac.webkit.org/changeset/83336 might have broken Chromium Win Release
It appears that this bug doesn't exist anymore.