Pre-roll ads do not play on IE11 when player in html5 mode
I'm having trouble getting Google IMA ads to play in HTML5 mode when using IE11 desktop browser.
I setup a test page that reproduces the behavior. It works fine in desktop Chrome and Firefox. The ads also play fine on all browsers when the player is set to Flash mode.
Watching the network monitor it appears that the player doesn't even attempt to load the ad tag url.
How can I configure the player to load googima video ads when in HTML5 mode on IE 11?