We have just published a new public beta revision 8.6.2.32267 with the following modifications:
Audio
fixed: Double Tracker instabilities when Stereo was set to zero
fixed: Double Tracker sound deviations at the right channel
Factory Effect Presets
added: four permanent Double Tracker presets
changed: order of permanent Natural Reverb presets
Rig Manager 3.2.57 for Windows(R)/macOS(R) and Rig Manager 1.1.3 for iOS(R) required!