-e: the exposed effects parameters are labeled with a grey dot in the inspector. in the mixer that same grey dot means something different though which is confusing using the same UI elements for two different things.

-repro:
--open attached project
--open mixer
--click the grey dots on the effect in the mixer
--notice they enable/disable the effet
--select an audio node in the mixer which shows its details in the inspector
--try to click the dots next to the exposed parameters
--NOTICE they do nothing