The icon file could not be parsed. Perhaps this means a bad XPM file, or perhaps it means the Lintian parsing needs to be improved. If the window managers and standard tools accept the file then probably it's the latter; please file a bug on Lintian then.
The tag is present in Lintian version
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 131c0f4. For merge requests, please use the latest version in the Lintian check menu-format.