Thanks for the replies!
Funny thing, I did the global parameters reset to see if that would help, and ever since I now get a random amount of the left slider LEDs illuminating each time I power up.
I wrote to Sequential tech support yesterday and this was the response I got..didn’t exactly answer my question about why this is happening but I guess it’s basically nothing to worry about according to them.
“It is not unexpected for the slider LEDs to illuminate briefly when the instrument is first powered on. In fact, the Pro 2 in our demo room shows the same behavior. Nothing is physically wrong with the synth in this regard and you should not worry about the synth's overall operation.”