Queue size in Pulse displayed negative number when region conflate is enabled

After enabling subscription conflate in my regions, I saw negative number in the queue size field in the Member Client Table in GemFire Pulse Website.

• GemFire Version : 9.8.6
• Number of Regions : 1
• 1 Client Application updating regions every seconds (Caching Proxy) (spring-data-gemfire)
• 1 Client Application reading data from regions (Caching Proxy - Register interest for all keys)
• 1 Locators and 1 Cache Server in same virtual machine
• Client Application (Spring data gemfire and Spring boot)