Exclusive Mode vs. Default - No difference?

[Teχnical]

So I've heard a lot of people insinuate that playing without exclusive mode means Yooka-Laylee plays in borderless windowed mode, which to me means that I can alt-tab and the window will still be visible and won't pause or freeze.
However, regardless of which "version" of Yooka-Laylee I launch, if I alt-tab out of the game, my game minimizes. Changing the game from fullscreen to windowed (unchecking fullscreen in options) in either mode does the same thing: the game becomes a window, and if I tab out, the game pauses/freezes, and has a window title bar at all times across the top.
How can I launch this game with an actual borderless windowed mode? Launching it by default with "Play Yooka-Laylee" on Steam doesn't do it for me. Or is what I'm hoping for just not possible?
Relevant info: dual monitor Windows 10 setup, custom build.

[468528456]

I think you're experiencing a glitch. It's borderless window when I do it and yes I'm running Windows 10 as well. I don't have dual monitors though so maybe that's the cause.

[Teχnical]

As I assumed. Anyone got any ideas?