Thread:VisualEditor/Feedback/Bug: doulbe newline added with a single button press

On a page with only a single line of text (including empty pages), pressing Enter results in two new lines being added, rather than the one that would be expected. If either of these new lines is then deleted, the cursor jumps to the first line of the page, even if it was the third line that was deleted. (Normally, one would expect the cursor to move one line up to the second line after deleting the third, but here it skips a line, jumping to the top).

ADDENDUM: When an empty page is opened with the visual editor, it starts with two newlines.

ADDENDUM 2: This happened for me when the page had content that wasn't visible in view mode (in this case, an infobox template, as the last thing I used my sandbox for was testing a new type of infobox). This doesn't seem to happen on a truly empty page. On a page with content between includeonly tags (which also wouldn't appear in view mode), the first Enter press moves the cursor down a few pixels, but does not add a new line; after that, it appears to work as expected. I have not tested saving edits under these conditions.