I ran into an issue with the Screenshot to Clipboard Interactively Macro related to this Set System Clipboard to File Reference action:
The action does put the image on the clipboard, but pasting into some apps (Messages, Unclutter...) resulted in a generic thumbnail rather than the actual image. The issue is related to clipboard/pasteboard/format/sharing issues that are above my pay grade, but I stumbled across a little trick that bailed me out so I thought I would share.
Adding a Rotate Image action (set to 0 degrees so it doesn't actually rotate), puts a duplicate of the image on the clipboard with additional formats which can be interpreted by other apps.
I also added an action to delete the past clipboard to get rid of the original so I wouldn't have duplicates.
Will anyone need this? No idea, but I was happy to stumble across it.