I have been having an ongoing issue now that makes working on Photoshop CC difficult and unenjoyable. When I open a photo it opens in the new window as usual and I can work on it. But then I cannot exit the window to go back to my main Photoshop files pages. The window in which I have been doing my edits remains open even after I save my work.
In essence it wont close that window unless I do a restart of my laptop.
If you are using a Photoshop 2021 version you should switch and use Photoshop 2020 version 21.2.7. All Photoshop 2021 versions have issues. You should always have more than one version of Photoshop, If Adobe breaks the latest version of Photoshop you will have an older version installed the you can use till Adobe addresses the issues in the current version of Photoshop.