FMOD Player distance not resetting

When using the in-built distance normalised it doesn’t reset when I return the param to zero - what am I doing wrong? Best J

I can’t see any obvious issues in that video, and the issue doesn’t seem to occur when I try to reproduce it here. That makes me think I must be missing important information.

What happens to the 3D preview while you drag the parameter’s value?
How exactly are you changing the parameter’s value back to 0? Are you dragging it the number box, or double-clicking on it?
Does the issue occur when using other kinds of spatializer effect, or is it unique to the TrueSpatial effect?