Maintainers for libecpg-compat3 are Debian PostgreSQL Maintainers <team+postgresql@tracker.debian.org>.
You may want to refer to the following packages that are part of the same source: libecpg-dev, libecpg6, libpgtypes3, libpq-dev, libpq5, postgresql-16, postgresql-client-16, postgresql-doc-16, postgresql-plperl-16, postgresql-plpython3-16, postgresql-pltcl-16, postgresql-server-dev-16.
You might like to refer to the libecpg-compat3 package page, to the Package Tracking System, or to the source package src:postgresql-16's bug page.
If you find a bug not listed here, please report it.