Either spoof your user agent with "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP; .NET CLR 1.1.4322; .NET CLR 2.0.50727)" or use browser stack IE6.
Expected: No JavaScript expected to run on mobile or desktop
Actual: Mobile loads JS, desktop thows JavaScript errors after attempting to load
Traced back to T39894 (https://gerrit.wikimedia.org/r/#/c/234678/)
Setting to unbreak now as this is breaking browser tests for MobileFrontend and stopping us from merging.