Yes, it is happening to me too, and yes, you are not alone.
But here is my fix, and a fix for the rest of you going through the same problem, thanks to this link. Right click on “Starcraft II.exe” and click on “Run as Administrator”.
Then you will get this window:
Then it will ask if you want to verify the contents in your Starcraft 2 folder, I just clicked “yes”. It didn’t state it was going to send anonymous user statistics to some server, which most people don’t like.