BUG REPORT preview volume 4.0.7 & still happening in 4.0.8 [Win7] [SOLVED ON NOV1 RELEASE!]

On Win7 (not sure if it's happening on Mac) when first opening rekordbox in export mode and playing a track via quick preview waveform the audio level is wayyy too low. Play the same or any other track on the player up top and the volume is normal. Click the waveform preview again it's still low- the only way it goes back up is to click the output volume fader at the top and the preview all of a sudden goes back to nominal level. 

This only ever happened in 4.0.7 never come across it on any of the previous versions. 

*edit now also happening in 4.0.8