Avid, the makers of Pro Tools, have announced Pro Tools 12.2.1, which according to some reports includes a fix for the VCA bug in Pro Tools.
Avid say on their website:
System Requirements and Compatibility with Pro Tools 12.2.1 Software (more info)
- Mac OS X 10.10.3-10.10.4 (Yosemite), 10.9.5 (Mavericks) and 10.8.5 (Mountain Lion)
- Windows 8.1 64-bit and Windows 7 64-bit
- If using Pro Tools 12.2.1 with Avid Artist, S3, S5-Hybrid and MCPro on Mountain Lion or Mavericks you should install EuControl 3.2 or higher (My Artist Login)
- S6 owners should update to version 1.4.1 if using Pro Tools 12.0 or higher (Avid Account > My Products and Subscriptions > S6 Software Update > Show)