When closing full screen app with red X a black full screen stays in that window.

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Level 1

8 points

When closing full screen app with red X a black full screen stays in that window.

When I close a full screen application with the red X or if I decide to minimize it using the green closing arrows it creates a black screen which I cannot close without quitting the app. For example if I am looking at a photo in a full screen window and I want to minimize it using the green arrow button and then drop that picture into another app, it will just create a black screen in that full size window and the program just stays that way. I can three finger swipe to another window just fine but the photos app no longer works until I quit it and reboot it.

This started happening with Yosemite and it has continued after loading Mojave. Any ideas on how to resolve this. It seems to only happen with my iMac and not my MacBook Pro. (Note: iMac is newer than my MacBook Pro)

Here is a screen shot of what it looks like when I did that to safari.

iMac (Retina 5K, 27-inch, 2017), macOS Mojave (10.14)

Posted on Oct 25, 2018 8:31 AM

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Answer 1

Barney-15E

Level 10

123,928 points

Oct 27, 2018 6:16 AM in response to Stacy.RyanL

If you find your Mac is "glitchy," try booting into Safe Mode and see if you still see the problems. Safe Mode is somewhat slow, some things don't work, and it will appear clunky. Just look to see if the same issues appear while booted into Safe Mode.

http://support.apple.com/kb/ht1455

If it runs ok in Safe Mode, then you may have something installed on that Mac that is causing the problems. We can investigate that if we need to.

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Answer 2

Barney-15E

Level 10

123,928 points

Nov 6, 2018 4:08 PM in response to Stacy.RyanL

Any ideas on what could be the problem?

It could be some third-party system modification causing the problem. Safe Mode disables them, so if it works ok in Safe Mode, it is possible that there is something interfering with the OS.

Etrecheck can help you see what you have installed. http://www.etresoft.com/etrecheck

If you have trouble interpreting the results, you can use the Share button to Copy Report, then paste into a reply here.

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Answer 3

VikingOSX

Level 10

126,548 points

Oct 25, 2018 8:37 AM in response to Stacy.RyanL

Use control-command-F to toggle out of full screen mode, then click the red traffic light to close the document, or application (it may not quit the application depending on how it was written).

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Answer 4

Stacy.RyanL Author

Level 1

8 points

Oct 26, 2018 12:44 PM in response to VikingOSX

Thank you for taking the time to reply and give me the work around solution.

I am really trying to figure out the root of the problem though? It seems my desktop is glitchy in the OS in ways that my MacBook Pro is not. I though the OS reload when upgrading to Mojave might fix it but the same problems transferred.

For example another problem I have is when I open my computer in Sierra I would see my custom desktop picture at the login. Once logging in however, it would change to the default wallpaper. I would have to select change desktop picture and in the system preferences window it would show my custom picture not the default one even though the default one was showing on my desktop. I would then click one of the options like stretch to fit or something and it would revert back to my custom photo.

Now that I have Mojave the same thing happens. I click on the login account to enter my password and my custom photo appears in the background, but as soon as I enter my password and my account opens up it is the default sand dune showing.

For some reason I think the two problems are probably interrelated somehow in the programming.

When I did the Mojave upload did it reload my OS or not? Is there a way where I should wipe my OS and reinstall it?

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Answer 5

Stacy.RyanL Author

Level 1

8 points

Nov 6, 2018 4:12 AM in response to Barney-15E

Thanks for the advice and sorry for the delay in trying it.

I booted to safe mode and interestingly enough when it came to the screen for which account to login to, it had the correct background picture for me when I clicked on my profile. After I put my password in, my account came up and the correct background picture was there initially then after it ran through another process or something (taking about 3 seconds) it switched my background from my personal photo to the default Mojave background.

Safe mode does seem to resolve the black screen thing when closing out a full screen window using the red x button.

Any ideas on what could be the problem?

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When closing full screen app with red X a black full screen stays in that window.

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