The intended behavior of the 'Back' button in the navbar intends to return the user always to the 'Home' screen (MainScreenWithTabs), even if the user have navigated from one narrow to another. We even use some custom logic for that.

This mostly works, except in few cases that may confuse our current logic. One such case:

• go to a stream narrow
• open the list of topics
• navigate to a topic
• go Back

Expected behavior - you are in 'Home'. Current behavior - you are in the TopicsScreen.