Moved from T89219:
...I'm also curious why the flash is happening at all (tested in Chrome 42 on MacBook Pro 15" Retina, using https://en.m.wikipedia.org/wiki/Kahl%C3%BAa as example) as the relevant code is loaded from the <head>, and called from an inline event:
<a id="mw-mf-last-modified" data-timestamp="1423188925" href="/wiki/Special:History/Kahl%C3%BAa" data-user-name="ArturZ72" data-user-gender="unknown" class="last-modified-bar truncated-text"> Last modified on 6 February 2015, at 04:15</a><script> if ( window.mw && mw.mobileFrontend ) { mw.mobileFrontend.emit( 'history-link-loaded' ); } </script>