I was building a “quick and dirty” report and found in some cases, I would get a double line spacing with a carriage return.
I tried many things but I could not get rid of this “feature.”
Google showed an old entry which explained how to fix it.
Select all lines on your page which have this problem (I did a select all)
On the toolbar, look in the Paragraph section. There you will see a button with both up and down arrows on the left side of a paragraph. Click it.
There you will see Add 10pt spacing after paragraphs. Deselect that and you will see your selection return to single line spacing.