Conformal Coating Affecting Inductor?
Anything intended to be used as a conformal coating should have no effect. 

If it was electrically conductive it may.
This is easily tested.   

If it was bulk conductive and formed a screen but had very low DC conductivity across terminals it may manage to do something to a circuit but this is unlikely.

If it contained a solvent it may have dis-solved something.
I have seen IPA dissolve 'expensive stuff' during "cleaning". 

If power was on during curing it may have been conductive and caused a problem.



Did you use heat in the process?
Was power on during the application process or during curing?
What DC resistance do you see per square cured and "wet" ?

Does it contain a conductive filler (eg Nickel or carbon)?