Disable Double Line Spacing?

All the sudden one of my stickies has double line spacing..I didn't make any config changes so I assume maybe I hit a shortcut or something but I cannot find anything anywhere abouit double line spacing.

Hellllllp

As far as i know there is no hotkey for double line spacing but sometimes you get it when you copy/paste from a document .

https://zhornsoftware.forumotion.com/t46-how-to-adjust-the-line-spacing?highlight=spacing


Or is it an undocumented sticky feature