Test PDF: https://github.com/JabRef/jabref/blob/feature/xmp-provement/src/test/resources/pdfs/KoppAZ-MADR-ZEUS-2018/KoppAZ-MADR-ZEUS-2018.pdf Drag'n'drop on Maintable results in following dialog:  In case XMP data is found, it reads as follows: 
Test PDF: https://github.com/JabRef/jabref/blob/feature/xmp-provement/src/test/resources/pdfs/KoppAZ-MADR-ZEUS-2018/KoppAZ-MADR-ZEUS-2018.pdf
Drag'n'drop on Maintable results in following dialog:
In case XMP data is found, it reads as follows: