Window switching issues with dual monitor set-up

I am frequently having issues switching between windows… sometimes when I minimize one window and attempt to click an icon on my desktop, it doesn’t work until I alt-tab through my open windows. The same goes for other open programs, whether on my main display or secondary VGA monitor. The program I attempt to interact with might as well be a screenshot of itself until I alt-tab out and back again… any ideas?

What are you using as option under MATE Tweak -> Windows ?
If it’s Compiz you might want to not use that.
I recommend Marco+Compton