Weird problem when opening Unity 2017

Unity Engine
1

Hello. I am facing a weird problem when I tried to open Unity 2017 .3.
I can minimize the window with no problem at all, but when I try to open it, it won’t open until like a second.
Never seen something like that.

With a brand new project, it doesn’t happen. But when I start adding assets to that project, then it start happening again.

I have no idea what to do. It’s driving me crazy.
It only happens with the 2017 .X versions of Unity.

EDIT: I think is the wrong subforum. My bad.

2

When you activate Unity, it scans for any changes that have happened since it went inactive. This can take a second.