Board Thread:Support Requests - Getting Technical/@comment-28245851-20170913171503/@comment-27958705-20170914193312

i believe it is a part of image lazy loading improving. it can be fixed (sort of) by this code: mw.hook('wikipage.content').add(function(content){if (content && $(content).find('.tabber').length) mw.loader.load('ext.tabber')});