Volume increasing, no matter sound slider setting

In my quest to lower in cockpit sound I've found that there is an issue with volume increasing no matter the slider setting.

One example is the menu music slider. Even if you set it to 1% it will start off quiet, but will keep increasing until it's loud.

Same for the cockpit slider. If I set it to 0%, no engine sound in the cockpit, but as soon as I put it 1% it will start off quiet, but keep increasing in volume. You can test this by setting it to 1%, go to external and then back into the cockpit. It will start off quiet and keep increasing.

This seems to be tied to a feature I've just noticed where sound levels go down when the radio message is being played, then the sound increasing back up. This seems to have made broken the sound sliders.