Ever since Vista, really, but it’s worse with Win10. Half the time I use Snip & Sketch (which is great otherwise), it won’t paste unless I open it and hit the copy button again. Sometimes I’ll grab a string of text (text selection oddities… that’s another rant), and it will paste one character. Just now, I tried copying from both S&S, RDP, MSPaint, and when pasting into a rich text form in Edge: nothing. Hold CTRL+C, then CTRL+V, nothing; hit the copy button, paste button, nothing. Yet, I was able to paste into other programs. And, I could paste an image from another program into Edge. It’s just all over the map.
This is across computers, different environments, different accounts.