Sorry to hear that Lightroom is not working as expected after you select the "Edit in Photoshop" command. I'd recommend that you take a look at the steps mentioned in this article 'Edit In Photoshop' command missing and let us know if that helps?
This does Not happen on any of my 3 systems running LR and PS. Windows 7 on a desktop and notebook and an iMac running High sierra.
So this is something specific to your system and setup. Not certain what Strg is but on my systems to Save a file it is Ctrl + s, Windows, Command + s, Mac.
So it is a setting on either PS, LR or the OS you are using that is switching Program Focus over to LR.
Okay great. Good to hear that there must be a way to set this "back to normal".
So I will check all preferences again. It has to be somewhere... :-D
I am able to edit in photoshop. This it not problem.
But when I save the image in Photoshop it automatically opens Lightroom instead of stying with Photoshop so I can go on editing there.
I personally don't know of any setting in LR or PS that would send you, switch focus, back to LR when a new file is added. So this might be an OS setting or something like a mouse setting.
Although it might be something like a Watched folder in LR in LR that when a file is added it take Focus away from whatever program has focus.
So check what folder you are saving the PS edited file to and what folder is selected as a Watched folder in LR.
I never heard of watched folders but I checked it and I have none.
It is right that a photo that I have imported in Lightroom and edited and saved in Photoshop should be imported as a new version back to lightroom. So this import is not the problem.
But yes I don't want it to switch focus to Lightroom then. And id never did with Windows 7.
I will check in my OS settings. Maybe I can find something helpful.
I am using Windows 10. If I open an image in Photoshop and make modifications and perform a Ctrl/S then the modified image will be written back to Lightroom but I will remain in Photoshop where I can continue working on the image.