The Pkg Contents had a line through it so nothing happened when I clicked on it. I tried to take a screen shot of the whole window with Control-shift-5 but it still only took a screen shot of what was shown on the desktop.
The line is a visual indicator to tell you that clicking on the icon will hide any package contents, i.e., compress the packages so they'll show, but not their contents. When you clicked on it, did the number of found files at the bottom of your screen change? (Just curiosity...not important.)
I've never heard of a control-shift-5 screenshot. I use command-shift-4 to take partial screenshots, and take multiples if the pane extends below the bottom of my screen.
