Rule #13 - Spell out numbers - False positive

[izmalk]

The following warnings:

 /home/izmalk/test/docs/izmalk/kafka-k8s-operator/docs/reference/r-requirements.md
 10:5    warning  Use 'one' instead of '1'        Canonical.013-Spell-out-numbers-below-10 
 10:126  warning  Use 'two' instead of '2'        Canonical.013-Spell-out-numbers-below-10 

Shown for the following source line:

* 3.1.6+ (due to issues with Juju secrets in previous versions, see [#1](https://bugs.launchpad.net/juju/+bug/2029285) and [#2](https://bugs.launchpad.net/juju/+bug/2029282))

As far as I understand the regular expression specifically excludes numbers preceded or followed by a dot (see the YAML file) . So the warning for 10:5 should not be triggered.

Adding single quotes around the RegEx or removing the escape symbols didn't help.

I'm not sure why the 10:126 warning (for the #2) is triggered but the 10:71 (for the #1) is not.
If I add the # to the negated Lookbehind pattern, both 10:5 and 10:126 warnings go away:

(?<![\-\.\,:\/*-+#])0(?![\-\.\,:\/*-+]): zero

Could that be, that it's a bug that it shows the 10:5 warning when it should have shown the 10:71 instead (for the #1)?