S3 Soloing causes channel pans to centre bug?

[Marsdy]

This is strange one.

I’m wanting to solo multiple tracks that are selected in PT. Pressing option+shift on the Mac keyboard, then a solo button on the S3 on one of the selected tracks solo’s all the selected tracks as expected. But, and here’s the problem, it also centres the left pan of every stereo channel in the selection. It’s happening intermittently unfortunately. It’s occurring quite a lot though and I’ve actually seen the left pan centre in PT’s mixer many times.

....And a question for which I should probably RTFM. Is the option for plug-in windows to open automatically when selecting a track JUST a EUCON preference or is there a keyboard command in PT that turns this on and off? I ask because I keep selecting solos in PT along with shift or command or option+shift (not sure which yet) and suddenly a plug-in window starts opening whenever I select a track.