All windows lose focus after 3-5 seconds

I too used the very useful Python script provided above.

I found the culprit was none of the faceless helper apps I expected.

Apparently, in my case, Parallels 13 is the culprit.

I just upgraded and renewed my subscription to it and the new Parallels Access in it is stealing focus.

Even worse, it is doing it most irritatingly when I am trying to type in a new filename for a PDF open in Preview. (That Preview app in Sierra itself has a recent new flaw that prevents filename changes typed into the document window title bar from being saved unless you hit Tab or something before hitting Enter).

I just quit Access and will file a report with Parallels because I do rely in Access to use my various Macs from each other or iOS devices.

Imran

2017-08-28 05:36:51: Parallels Access Agent [/Applications/Parallels Access.app/Contents/MacOS/Parallels Access Agent.app]

2017-08-28 05:37:17: Parallels Access [/Applications/Parallels Access.app]

Same thing for me - I can hardly type this! I hope someone has a solution!

Same for me this morning. Rebooted a few times and now, spontaneously, no issues. Did a little research online and found similar threads implicating the App Nap feature. Disabled this feature in each app through Get Info and checked off Prevent App Nap. Still no issues.

Spent half hour on the phone with tech support. Shared the screen, and he could see the problem too. Booted in safe mode and the problem disappeared. (Hold down the shift key.) Rebooted normally, then went to settings, users and groups. Clicked on my account, and removed all automatic login items. I had one item there for an old Logitech mouse I dint even have anymore. Rebooted again, and so far the problem seems to be gone. I hope that helps!

This apears to have worked for me. I removed all the automatic login items then tried a reboot in normal mode. That did not do it. Then rebooted in safe mode, which seems to not have the issue and just rebooted and the issue has gone away.

Thanks!

-Rindress

And this morning, it's doing it again.Back to the drawing board...

OK - one more try - this time I'm hopeful I found it. I tried Safe mode again and it stopped, but started again on a regular reboot. So I started looking for any extension I could think of that might be extraneous. I had a control panel in the system preferences that Cox Cable had for doing backups to their servers. I deleted that and the problem immediately disappeared. I've rebooted a couple of times and it hasn't come back yet. Hopeful once again...!

I am having the same problem. I have tried rebooting sometime that works and other times it doesn't. I will try the safe mode to see if it helps. I hope Apple support is following this and working on a fix as it makes the system pretty unusable.

Removing all apps from auto login and safe mode booting did not help me. Any other ideas?

I did. (Have the cox preference pane). I removed it from the preference pane. I then rebooted. This is the longest I have been able to type since the problem started, so maybe that was the issue. I don't use it for backup, so I tried to uninstall it but I kept getting errors about connecting to ivault.

that didn't last long. Shut my laptop down last night and I am having the problem again. Any other ideas?

It was Cox for me as well. I disabled and no problems for the past 36 hours.