Before upgrading to 2017, I've always clicked my Photoshop icon then returned to whatever other app I'm using to continue working while Photoshop opened in the background. I have other apps that try to jump in front while still opening (yet not ready to use) but a click or two shoves them into the background without further hassle.
Photoshop CC 2017, however, is persistently obnoxious and jumps in front of whatever I'm using several times. So often and so fast, in fact, that when I bring the other app to the front, I don't even have time to move it to another monitor before Photoshop has jumped in front again. I would care if Photoshop was ready to use when it jumps in front any of these times, but it isn't. It does it just to be a brat.
Is there a way to make it cease this behavior and rediscover the manners all previous versions had?
The issue that you are facing is a known issue and is being worked on, I would request you to add your vote at: Photoshop: When launching Photoshop it recurringly takes focus from another application/task (Windows) | Photoshop Famil… , also you may follow this thread and check once there is a resolution/workaround.
Any progress? It's still driving me crazy.
When is this nightmare going to end? I even downloaded the previous (2015) version and it still does that! This insanity seems to have infected Dreamweaver as well. Somebody needs to be executed and then fired.