Alright, you have a valid point. However, I found the following suggestion when googling for a resolution: “There’s probably an app that’s “locked” the clipboard. Try and work out what app has done that and close it.” Source: http://superuser.com/questions/254333/clipboard-stopped-working
So what I am suggesting is that LibreOffice does not communicate with the Clipboard properly?
Here is an additional information regarding the incident. I was able to perform a whole lot Cut’n’Paste, Copy’n’Paste, both before and after and in between the locked LibreOffice vs. Clipboard interaction. So between other programs on Windows 10 Copy’n’Paste worked flawlessly.
But LibreOffice Calc wouldn’t take that text string from the Notepad program, but rather the previous Clipboard selection was presented over an over again, without being overwritten when attempting pasting into Calc.
All the other programs didn’t care about that previous locked Clipboard element, that LibreOffice Calc was stuck on. It just bypassed that Clipboard element as if it was never there. Now I have described this incident even more clearly. I will leave it with you. If you want a better LibreOffice experience with Windows 10. Or maybe you can pinpoint the Windows 10 culprit then, if there excist such?