Comments containing banned words slipping past both automations and automoderator

We have a filter in both automations and automoderator on /r/Nintendo to catch some slurs.

In the past few days I've noticed some comments slipping through that got through both filters, specifically with the r-slur.

For example, this comment managed to slip past the filters.

The regex involved is slur(ed|s)? (slur edited to ensure rules don't get broken).

When testing in the automation tools with the comment I linked above, it blocks me from submission, and also it blocks submission on sh.reddit.com