This application is modifying the autolayout engine from a background thread, which can lead to e...

屏幕快照 2019-02-28 下午3.52.32.png

屏幕快照 2019-02-28 下午4.04.34.png

dispatch_async(dispatch_get_main_queue(), ^{
    // Some UIKit call that had timing issues but works fine
    // in the next runloop.
    [self createHeaderCellUI];
});