Custom Rule Not Being Evaluated

It is possible that there's a slight misconfiguration after you add new statements/ modify the Label match rule. It would be good to share the rule configuration that you are using.

In my understanding the rule would look something like this:

{
  "Name": "Label_Match",
  "Priority": 0,
  "Action": {
    "Block": {
      "CustomResponse": {
        "ResponseCode": "200"
      }
    }
  },
  "VisibilityConfig": {
    "SampledRequestsEnabled": true,
    "CloudWatchMetricsEnabled": true,
    "MetricName": "Label_Match"
  },
  "Statement": {
    "OrStatement": {
      "Statements": [
        {
          "LabelMatchStatement": {
            "Scope": "LABEL",
            "Key": "awswaf:managed:aws:sql-database:SQLi_Body"
          }
        },
        {
          "LabelMatchStatement": {
            "Scope": "LABEL",
            "Key": "awswaf:managed:aws:core-rule-set:CrossSiteScripting_Body"
          }
        }
      ]
    }
  }
}