Middle click activates search. How do I turn it off??

Middle click brings up search. How to I turn it of??

I mostly use middle click for opening new tabs and closing tabs when browsing. Whenever I middle click, it activates search, even if i'm not in a browser.
I wanna turn this feature(if it is) off.. and if it's a bug how do I fix/get rid of it?? It's really annoying :-)

For me on my HP Laptop I disabled 3 finger tap to open cortana, and middle click is not bothering me any more. Weird fix is not it.

Touch pad icon → Mouse Properties → Settings →Three-Finget Tap