I've been having the same issue on my Avid s1 since march
Windows 10
Pro Tools HD v.12.5
EuControl v. 20.5.0.149
Avid s1 Firmware v. 20.5.5.0
- Knob on channel #4 is flickering and writing pan automation without being touched.
- Pans are being randomly resetted to 0 as I'm nudging from track to track. Selecting a track from Pro Tools will get the same effect. I'm not 100% sure it's related to channel #4 on the s1 but it's probably safe to assume so.
- I'll send it back as it's still under warranty from the store but it looks like a common problem from the early models.