An effective workaround would be to rebuild the packages for all supported series sequentially, to ensure the build IDs are in ascending order.
Currently, at least for amd64, they are reversed:
$ grep -r --include="application.ini" BuildID | sort 16.04/usr/lib/firefox/application.ini:BuildID=20190517141553 18.04/usr/lib/firefox/application.ini:BuildID=20190517140819 18.10/usr/lib/firefox/application.ini:BuildID=20190517140354 19.04/usr/lib/firefox/application.ini:BuildID=20190517140251 19.10/usr/lib/firefox/application.ini:BuildID=20190517114929
An effective workaround would be to rebuild the packages for all supported series sequentially, to ensure the build IDs are in ascending order.
Currently, at least for amd64, they are reversed:
$ grep -r --include= "application. ini" BuildID | sort lib/firefox/ application. ini:BuildID= 20190517141553 lib/firefox/ application. ini:BuildID= 20190517140819 lib/firefox/ application. ini:BuildID= 20190517140354 lib/firefox/ application. ini:BuildID= 20190517140251 lib/firefox/ application. ini:BuildID= 20190517114929
16.04/usr/
18.04/usr/
18.10/usr/
19.04/usr/
19.10/usr/