When putting multiline label (with linebreak set to Word Wrap) into a stack view, the label immediately loses the linebreak and displays the label text in one line instead.<
26 November 2020, Xcode 12.2, iOS 14.2. Following works for me for vertical stack view. It works on all devices and simulators. I use storyboard and all these values are set in storyboard.
UILabel
Lines: 0
UIStackView
Alignment: Fill
Distribution: Fill Proportionally
UILabel is embedded in a view and pinned to all sides to UIView.