Amplify fpm connections metric is misleading or incorrect

Hi,

I have nginx and php-fpm monitoring in amplify. Recently I created a dashboard to analyze incoming requests, fpm connections and their correlation. I realized that "fpm.conn.accepted" chart without specifying pool (meaning all pools) displays bigger and sometimes 10x bigger numbers in comparison to if display the chart by specifying all pools to show each value separately and sum of them. I'd expect the sum of all pools to be equal to the first chart but it is not.

Screenshot: https://prnt.sc/I_lWhkSDye3I

As you can see the blue lines are far from being equal or close to each other.