So this has been asked before about older versions of Unity. I’m still getting a problem like this using 2017.4.2f2. The solutions in the linked question are really not what I’m looking for. This is concerning builds on OSX.

When running the game from Steam, it is paused and does not have focus when it starts.

If I set it to RunInBackground, it runs fine, but still does not have focus, so it throws out the first click on the menu.

Got it.

In your launch options, Steam’s default is:

Cognizer.app/Contents/MacOS/Cognizer

Don’t do that. Just put

Cognizer.app