Just noticed this:
In KM preferences>Clipboard,
If you copy-paste an image from Preview,
RESULT:
it gets pasted as 2x,
so, Click at Found Image won't find them.
EXPECTED:
It gets pasted as 1x.
note: should act the same as when you drag an item from your desktop or paste from your clipboard, it gets added at the correct size.
Using KM 9.0.4