The video page type in Bootstrap template is not displaying correctly when viewed in Internet Explorer 11. For some reason the video is displayed at full size, rather than responsively.
Here is an example:
xerte.cardiff.ac.uk/play_5974 (see the "Finding Your Library" section on the first page)
And another annoying bug across all browsers it the media player progress bar. If you happen to run your mouse over the progress bar you'll notice that a timer label still appears and follows your mouse movements even when you're no longer hovering over the player. Also, when using the audio page type, the player volume control appears outside of the player in Chrome.
In general, the MediaElements players used in Bootstrap (or perhaps just their implementation) are really bad - they look very unprofessional and seem to be a step backwards from using just the basic browser-specific HTML5 video or audio players.