The tag is present in Lintian version 2.113.26. That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit 43a81d7. For merge requests, please use the latest version in the Lintian check documentation/manual.
The manual page appears to have an overly generic name that is likely to clash with other packages.
Please check your debian/rules or upstream Makefile.