Description text box / area: How to insert a line break? Line spacing / padding is inconsistent.

[Deleted user]

h4. {color:#707070}Line 1:{color}
- line 2
- line 3


h4. {color:#205081}Line 4:{color}
- line 5
- line 6


h4. {color:#205081}Line 7:{color}
# line 8
# line 9


h4. {color:#14892c}Line 10:{color}
* ✔︎ line 11
* ✔︎ line 12


h4. {color:#cccccc}Line 13:{color}
* × line 14
* × line 15


h4. Line 16:
* line 17
* line 18

produces

How does one insert a line break between paragraph line and a heading line immediately below it? e.g. lines 3 and 4 or especially lines 9 and 10

Why is there greater padding below a heading than above it?

What if one does not wish to use `----`?

----

This problem has existed since before the recent UI refresh and now it's worse!