This is a workaround, but it works every time, as well as for UILabels, which is more interesting:
Just open a text editor (for example, textEdit or Xcode itself), write the text with new lines as desired, and copy it to the Label text property in the interface builder. It is displayed both in the interface builder and at runtime.
FranMowinckel Jul 08 '16 at 18:04 2016-07-08 18:04
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