The Matching Question feedback is working for me in Chrome (Windows 10)
Tho I did get a console error:
matchingView.js:18 Uncaught TypeError: Cannot read property 'forEach' of null
at n.enableQuestion (matchingView.js:18)
at n.onEnabledChanged (questionView.js:54)
at _ (backbone.min.js:2)
at m (backbone.min.js:2)
at f (backbone.min.js:2)
at n.u.trigger (backbone.min.js:2)
at n.set (backbone.min.js:2)
at n.set (lockingModel.js:9)
at n.setQuestionAsReset (questionModel.js:275)
at n.setQuestionAsReset (questionView.js:296)