Author: KilliondudeWP
Description:
The edit summary box currently uses a textarea input box. Current functionality has the return key starting a new line in the textarea, but upon save the edit summary is truncated into one line in the page history (line breaks are turned into spaces). Thus, the textarea box is misleading.
A more sane option would be to use a single line text input box, where the enter key processes the edit rather than starts a new line.
See T40042 and T42034, and specifically T42034#467450.