Thread:Extension talk:LiquidThreads/LQT nor formatting properly after changing web host

I've recently moved a mediawiki installation (mw: 1.23.3, lqt: 2.1 alpha) to a new web host and as a result liquid threads no longer formats properly. On the page responses to threads do not appear in ordered grey boxes but rather appear in plain list down the page without any formatting, as though no CSS is being picked up.

Any idea what the cause might be?