Tab item titles stay truncated after the bar width changes

UITabBar measures titles on the first layout pass. After unfolding, the bar is much wider but labels stay truncated with an ellipsis until the user switches tabs. Reapplying standardAppearance does not rebuild the buttons. Is there a public API to invalidate tab-item title measurement when the bar’s width changes?

Tab item titles stay truncated after the bar width changes
 
 
Q