Can't copy-paste in DOM explorer

Hi everyone

I hope someone can help me, as this seems to be a rare problem and I haven't found anything by googleing.

I have a new Win 10 PC with IE 11, and now I can't copy-paste anymore with the keyboard controls in the DOM explorer (it only works with right mouse click)

(The DOM explorer is this thing here, when you right click on a page and select inspect element (or whatever it is in English): https://picload.org/image/rarpgigw/image1.jpg)

Does anyone have an idea why it's not working or what I need to install or adjust?

Thanks

Does keyboard controls for c-p work elsewhere in IE11?

Yes, it does.

And does the exact thing happens in other browsers in inspect element ? or IE alone?

Seemingly IE alone. It works in Firefox, and I don't have any other browsers.

Had to look up what DOM is as the name/meaning of the acronym not given. After reading about it I think I will simply stay with IE11's View, Source where I can indeed Select, Copy then Paste into another program such as Notepad using either the mouse or keyboard. If needing to edit or create pages on my Domain I use Expressions Web.