This is not a bug report, rather a feature wish. (I couldn't find information on how to submit those, if this is not the correct way, please redirect me!) I love Spectacle, but it is missing a key feature in my opinion: Copying the image to clipboard, after taking a screenshot using a shortcut. I know that I can drag and drop the image from the resulting notification, it's just an extra step and the notification expires after a while. I'd like to have an option under "Configure" -> "Save", similar to the "Copy file location to clipboard after saving", which stores the taken screenshot in my clipboard. Thanks for your amazing work on KDE everyone!
Wasn't aware of the newest version, this should already be working. I'm closing it, sorry for the confusion.