In the UE editor, it looks like each line gets all the trailing spaces trimmed as soon as you leave the line.
When you type in a select statement, like:
SELECT first_name, middle_name, last_name
Then type in
WHERE (with a space or two here)
Then go up to your select to copy a fieldname, like last_name, and paste it back on your WHERE statement, there is no more space after WHERE, so it looks like:
You have to go back and add the spaces again.