I agree 100%. Preserving whitespace is absolutely vital. Repost it in Suggestions, it’ll get my vote.
(Sorry. Couldn’t resist) 
I agree.
I have noticed this: when I copy any example code from some source and paste it into the Katalon Forum, all the indenting whitespaces disappears. Paste operation is problematic. I think Katalon Forum needs to equip a sophisticated javascript which deals with the key-stroke of ‘paste’ so that it preserves whitespace in the copied input. — well, difficult to explain.
On the other hand, GitHub’s Gist preserves whitespace 100% on any paste operation! Wow! Gist must have equipped with a set of state-of-the-art javascript, I suppose.
From now-on I would use Gist for presenting my codes in the Katalon Forum. I would copy my codes into Gist, pick up the URL of the Gist page, and paste the URL into Katalon Forum post and comments. Then Katalon Forum visitors can click to URL to move to Gist and see the codes with preserved whitespaces.