At the time of the last Lintian run, the following possible problems were found in packages maintained by Christopher Knadle <Chris.Knadle@coredump.us>, listed by source package. See also the full report, including info, experimental and overridden tags. Also see their QA overview.
aprx (2.9.0+dfsg-2) [Uploader] §
mumble (1.3.0~git20190125.440b173+dfsg-2) §
- scripts/mumble.appdata.xml (cc0-1.0 != bsd-3-clause)