MySQL v2 Sensor with RDS Instance: Channel Graph doesn't reset

PRTG version = 18.3.43.2323 Sensor = MySQL v2

DATABASE
We're monitoring a MariaDB RDS instance

SENSOR CONFIGS

1. Data
   1. SQL Query File: custom-file.sql
   2. Handle DBNull in Channel Values as: Number 0
   3. Select Channel Value by: Column Number
   4. Sensor Channel #1 Name: Count
   5. Sensor Channel #1 Column Number: 0
   6. Sensor Channel #1 Unit: Count
2. CHANNEL CONFIGS
   1. Limits: Enable alerting based on limits
   2. Upper Error Limit (#): 0
3. SENSOR NOTIFICATION TRIGGERS
   1. State Trigger:
      1. When sensor state is Down: send alert
      2. When sensor state is Up: send alert

RESULTS / GOAL

1. Custom-file.sql runs a select statement to get a count from a table
2. The sql statement works and provides the correct value - we're simply running tests and updating the db to toggle the output to be expected
3. the sensor is reporting the accurate count, and sending Down/Up alerts as expected
4. the sensor is also reporting Red/Green correctly based on whether the count crosses limit

ISSUE
Channel graph color does not reset after alert clears. The sensor resets to an Up status/Green, but, the channel graph remains Red. This leads to a confusing visual when looking into the sensor specifically.

RESOURCES REFERENCED

• https://www.paessler.com/manuals/prtg/mysql_v2_sensor
• https://kb.paessler.com/en/topic/70618-how-to-setup-the-sql-v2-sensors-in-prtg-is-there-a-guide
• https://kb.paessler.com/en/topic/71779-how-can-i-monitor-mysql-performance-via-mysqlv2-sensor
• https://kb.paessler.com/en/topic/75786-monitoring-mysql-stat-s
• https://kb.paessler.com/en/topic/63259-how-can-i-monitor-strings-from-an-sql-database-and-show-a-sensor-status-depending-on-it

mysql-v2-sensor prtg rds