Alright I think I've found the solution actually! I've pushed it to the Steam beta version.
Would you mind trying the steam beta when you get a chance?
This is different from the pre-release beta. To enable it:
- Right click Juice Galaxy in your steam library
- Click 'Properties'
- Click the 'Betas' tab
- Select 'beta-beta' from the dropdown box
Steam will then update Juice Galaxy. You may have to restart Steam.