Lintian task does not update the link when maintainer changes but the stats are unchanged
The UpdateLintianStatsTask assumes that that when the number of warnings/errors is unchanged, there's no need to update the ActionItem object. While this seems sensible at first, it actually is problematic when the maintainer of the package changed while the lintian stats did not change. The reason is that the lintian URL (unhelpfully) integrates the email of the maintainer and should thus be updated on maintainer change.
This happened at least once when someone orphaned a package without fixing any lintian warning or error (and without introducing any either).