IE11 events not working / Google Tag Manager integration

[helenatmgp]

Hi,

We noticed a discrepancy between plays on Vimeo and plays filtering into Google Analytics.

We've used Google Tag Manager to deploy the event tracking.

When I drilled down we see 100+ pageviews for the video page on IE but no events recorded.

I tested the tracking using the Google Tag Manager preview and the Vimeo events fired and were pushed into Google Analytics. I then turned off the preview and played the video: no events appeared in Google Analytics.

The video I'm using is on https://www.guidelinesinpractice.co.uk/respiratory/animation-on-braltus174-tiotropium-bromide-zonda174/453176.article.

The GTM preview container is here: https://tagmanager.google.com/scc/?uiv2&id=GTM-NF74WK&gtm_preview=env-44&gtm_debug=x&gtm_env_name=Draft+Environment+43+2016-07-25+03:52:01

Can anyone see where the tracking is falling over?

Helen