Try this https://vcvrack.com/downloads/Rack-1.dev.42cbb51-win.zip
Aftertouch, mod wheel, and pitch wheel should behave properly, if I’m understanding the standard correctly.
Btw, if you don’t want this copy interfering with your Rack 0.6 installation, launch it with
Rack.exe -u .
You can do this with a command line or by creating a shortcut, opening the Properties window, and adding it to the Target box.