Interesting how this thread started two years ago has remained completely actual. Evernote needs some kind of line-spacing control, even if it's just the ability to consistently strip down to single-spacing. I'm growing to really, really like Evernote but, as another user commented, Evernote's ' failure to support plain text' is a major flaw. It's not a 'feature request' to want 'simplify formatting' to strip ALL of the formatting out of our notes. Only way re-pasting (and that's not a reasonable thing to need to do) works is with a brand new note. And, like some other users, I tried cleaning up the problem by pasting into an intermediary program (textedit), turning the copy into Plaintext, and pasting into Evernote. Same thing with space-V, as Emerick suggested. Tried CTRL/Command-SHIFT-V instead of CTRL/Command-V and I still end up with wide spacing. Some lines are 'simplified' to single-spacing - others have a line inserted between. Even when I 'simplify formatting' it's not clearing the formatting consistently. I'm having the same experience, using the Mac desktop version 3.2.0 (premium). I consider these basic text editing issues, not features. It persists even when the bad lines are removed. Deleting lines does not get rid of the bad formatting. Copy & past fonts get upscaled & downscaled size at random. Line spaces double when I don't want them. Lots & lots of basic text editing problems.

Evernote windows line spacing