Control: tags -1 + patch upstream fixed-upstream Control: forwarded -1 https://bugs.gnucash.org/show_bug.cgi?id=798156
For fixing the package in Debian I suggest applying the corresponding upstream commit instead:
https://github.com/Gnucash/gnucash/commit/bbb4113a5a996dcd7bb3494e0be900b275b49a4f Best regards, Micha