The infraction system contains what is called a Warning. The warning is - as its called - just a warning about the forum rules, and thus awards 0 infractions point, and does not count up towards the infractions limits. However it enables moderators to perform a more uniform moderation and avoid/minimize double moderating, such as two different moderators acting upon the same issue.
It is distinguishable from an actual infraction both by wording in the PM and the "yellow" icon, instead of a "red" icon
Warnings are given to point to the forum rules, when the moderator in question does not believe the violation was either intentionally enough to warrant an actual infraction, or simply wanted to ... well ... warn that similar posting would violate forum rules, and thus could mean infractions.
Thus there is no problem with the infraction system in that regards, and it is as intended.
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