Hi, I found a workaround for this bug, thanks to Phil Wyett. Check the test #4 on https://wiki.debian.org/PhilWyett/DebianMentoring
If you're using sbuild to build your debian packages, you should go to your config.pl and comment out the lines calling piuparts and run the sbuild command to first build your package from your debian packaging folder. Then go back to the directory where your sources.changes is located and there separately run piubuilder for the sources.changes file. This fixed the issue for me.
