Youtube video frame misplaced.
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skipgilles last edited byUsing mac 10.10.5 (but also on earlier versions) and opera 34.0 (but also earlier versions), 
 Youtube behaves strangely: the video is playing but misplaced, halfway overlaying the box where the the video should be and also overlapping the description and suggested video's, see picture: http://www.gillesdutilh.com/parking/opera_youtube.png
 Any idea how to fix this?
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avl Opera last edited byHi @skipgilles, do you use a Retina screen, and if so at which resolution setting (default or scaled)? 
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skipgilles last edited byHi @avi, 
 I have a macbook with built-in Retina display (13.3-inch (2560 x 1600) )and an external Thunderbolt display (27-inch (2560 x 1440)).
 On both, I see the same problem.
 Gilles
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skipgilles last edited byOh, but now I realise that I had the same problem on my previous macbook, which did not have a retina display. 
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Deleted User last edited byYou seem to be using an add-on that adjusts the HTML and CSS on YouTube. Have you tried disabling all of your add-ons? 
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skipgilles last edited byIt's almost always on the display where it started. That is, the external thunderbolt display that I use as primary display. 
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skipgilles last edited by@nrqj: Why does this seem so? In any case, I tried youtube after disabling all plugins (plugin == addon == extension?) and restarting. Same behavior. 
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skipgilles last edited byAh, @nrqj, I got it! - I learned plugins are something else than extensions (addons).
- I disabled the extension "YouTube Center" that was more or less rudimentary still sitting there. Performance normal again. Thanks a lot for your suggestion!
 (Also still thanks to @avl.) 
 @nrqj had the right idea
 @nrqj had the right idea