AGV Condition Proxies ignore moving actors

Sounds attached to moving actors do not appear to be respecting custom AGV conditions.

• Enable the Audio Gameplay Volume plugin
• Create a new Actor Blueprint
• Add a VolumeProxy as a component to the Blueprint, and in it's details tab in Audio Gameplay set Proxy to AGV Condition Proxy
• Add an Attenuation Component to the Blueprint, and under Volume Attenuation set Exterior and Interior Volume to 0.0
• In the Class Settings tab on the Blueprint, add the interface Audio Gameplay Condition
• In the Audio Gameplay Condition Interface, doubleclick the Condition Met function and add a reasonable condition. It can be a simple condition - I tested this with a basic bConditionMet bool that I toggled with a key press
• Place an instance of this Blueprint into the level
• Create a MetaSound with looped audio, and assign it a SoundClass with Apply Ambient Volumes checked
• Place an instance of the MetaSound directly into the level
• Open PIE and toggle the Volume Condition on and off - observe that this causes the MetaSound to fade in and out
• Remove the MetaSound, and add a moving actor to the scene. Attach the MetaSound to this moving actor via an Audio Component
• Open PIE and toggle the Volume Condition on and off again

Expected Result:

• Both static and moving instances of MetaSounds respond to changes in the Volume Condition Proxy

Actual Result:

• If the MetaSound is attached to a moving actor, it is completely unaffected by the Volume Condition Proxy