Autocapitalize first character does not happen on iOS after pressing 'return'

To reproduce:

• Open any of the Draft examples in iOS.
• Touch the editor area.
• Start typing. The first character of the sentence is automatically capitalized, which is correct and expected.
• Type a period and press space. This starts a new sentence, so the next letter typed is again capitalized.
• Finish the sentence, type a period and then press return. The cursor moves to the next line.
• Start typing. The first character is not capitalized.

Is it possible to make this work?