Steps to Reproduce
In a Helsinki instance, set the glide.ui.m.helsinki_mobile_enabled property to true.
Trigger a notification that produces a link to a particular record, such as an incident.
From a mobile device, click on the notification link.
The mobile device opens the record view; however, there is no way to access the related list. Normally you can navigate to a record and click the back arrow key to see the activity stream view, and access any related lists. In this situation, clicking the back arrow key brings you to the homepage instead.
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Related Problem: PRB713724