Sometimes Paperpile does not pick up the correct or a useful Abstract from attached PDF’s. When this happens, I usually cut and paste from the actual PDF into the abstract section in the Paperpile entry.
When I was using another PDF reader, there were no problems with this procedure. Now that I am using MetaPDF I have noticed on a number of occasions that the pasted entry loses formatting, in particular appropriate gaps between words. In otherwordsthere can be a numberofwords strung together without gaps inbetween.
I have also noticed this problem can occur in MetaPDF in the notes generated by highlighting text, though this is in the form of g aps in the wr ong place.
Cheers