Forum paragraph spacing

The Preview and the Created Topic are not formatted the same.

In the editor, I leave a blank line between paragraphs. I see this blank line in the Preview, but the blank line is removed in the Created Topic.

Sometimes I’ll add a <br> between paragraphs, but the spacing is really wide – multiple lines.

What is the preferred solution? Leave the paragraphs abutted to one another or add the <br> even though the width is between paragraphs is wide.

NOTE: It appears that it does not happen in all Categories. The paragraph formatting is fine here in Site Feedback, but not in the English category.

Examples: