[ENTER_BR]: Enter hides space before text and leaves cursor in first line.

[Jakub Ś]

Steps to reproduce

1. Set editor enterMode to ENTER_BR
2. In editor, enter text - 'Send to 123 Main St'
3. Place cursor immediately after 'to', before space
4. hit Enter key

Expected result

Space in front of '123' is visible and cursor is blinking before it.

Actual result

There is no space in front of '123' and cursor is still blinking at the end of first line.

Other details (browser, OS, CKEditor version, installed plugins)

[Jakub Ś]

Chrome and Firefox have similar problems: #16905 and #16929