I've reported this before and I'm curious to know if it happens for others.
I keep copies of my screen captures in SC (ver. 2.37.03). If I highlight an older screenshot in the screenshot panel it appears highlighted (selected) on the main screen, but if I use Ctrl C to copy it, nothing happens.
However, if I reselect the image or press Ctrl A and then Ctrl C, it copies fine.
Am I using this wrong or is it a bug?