Open Radar

 
This is a duplicate of rdar://24654192

Summary:
Presenting a UIAlertController on a modal view controller breaks the tint color of all the subviews of the original presented view controller.

Steps to Reproduce:
- Open the example project
- Note that in AppDelegate.m the window’s tint color is set to red
- Note that in the Main.storyboard the tint color of the two segmented controls in the last two screens is set to green
- Run the app either on simulator or device
- Tap the ‘Present Screen’ button to get the app in a modal ui state
- Note that the buttons on the next screen are red, as it’s the window’s tint color and the segmented control is green as in the storyboard.
- Tap on ‘Show alert’
- Dismiss the alert
- Tap on ‘Push’ while looking at the segmented control

Expected Results:
- The green segmented control stays green and the next screen has a green segmented control as well

Actual Results:
- The segmented control turns red as you tap on the push button.
- The segmented control on the next page is red as well

Regression:
This does not happen if you don’t open the alert but instead directly push the next screen.

Notes:
There is a screencast and a sample project attached to this radar.

See the screencast. It showed the issue on a simulator there because I can point with the mouse to the area where something unexpected happens, but it is reproducible on the device as well.

This may be related to rdar://18365720 but I am unsure, so I file this as a new radar.

For OpenRadar please find the sample at https://github.com/michaelochs/radars/tree/master/24654192%20-%20TintColorWithAlertViewBroken