Issue with tracking GTM events coming from iOS devices
We have implemented GTM event tracking in our mobile-friendly web application. Starting from mid January 2017 (until now) we have a massive drop (~80%) of events tracked from iOS devices. This is not the case with android devices.
We verified that the issue (events not being tracked) happens only on the latest version 10.2 and 10.2.1 iOS version devices. The issue happens both in Chrome and Safari mobile browsers. The drop of tracked events also coincides with the iOS version updates - December 2016 for v10.2, and January 2017 for v10.2.1
Older version iOS devices (ex. v9.x) do not have the issue and they still trigger the event tracking correctly.
Has anyone else experienced the same issue? Any pointers would be much appreciated.