The problem:
For line breaks we already have whitespace tags (that we also need because of how a browser deals with whitespace), but after a new line tag content is on the same line, so it doesn't look like a new line.

The solution:
We should always enter a new line in the open segment after the new line tag, so that it really looks like a new line also for the user (we need to make sure, that no extra space is saved for this in the segment table, when saving). Also new line should look like a new line in segment grid as well.