This is a common pitfall when you are using UIStatusBarStyleLightContent for your status bar when you want light colored status text over dark colored background.
There are 2 things that you MUST set to make it work.
This is usually what developers will do - Under Target settings > General > Status Bar Style > Change to Light. This will effect the Info.plist to include UIStatusBarStyleLightContent.
This is an obscure/unnatural step - In Info.plist, add
View controller-based status bar appearanceand set to