When upgrading to iOS 26.4, the guidance panel in CPMapTemplate is displayed in a striking red color. This happens with App Store version of the app which was compiled with iOS 26.2. Up to iOS 26.4 this panel has always been shown with a color which matches the ETA view below, in a dark gray. Compiling the app with iOS 26.4 makes nos difference.
I have checked my code and I cannot see anything on my side which can trigger this change in the colour and only for iOS 26.4.
I thought of restoring the old behaviour by using the property guidanceBackgroundColor in CPMapTemplate. But although I have tried to use a gray, I still get the red color.
Is this the intended color in iOS 26.4? Is it a bug? Is there a way to use a custom color which matches the left and ETA panels?
Thank you.