Opaque NavigationBar result flashes on Refreshing indicator on iOS 11

Originator:adrianopaladini
Number:rdar://34402491 Date Originated:09/12/2017
Status:Open Resolved:
Product:iOS + SDK Product Version:11 GM
Classification:UI Reproducible:Always
 
Summary: 
The Refreshing Indicator (Activity Indicator) on navigation bar on iOS 11, when navigation is set to opaque, flashes or disappears

Steps to Reproduce:
Create a simple tableview with navigation control. Enable Refreshing. Test it with a transparent and opaque navigation

Expected Results:
Show animated refreshing indicator both on transparent and opaque navigationbar

Actual Results:
On opaque navigationbar, the refreshing indicator flashes

Version/Build:
Xcode 9 GM/ iOS 11 GM

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