Bug report-Faders "stuck" Hog 5.1.0 on Roadhog

On the Non-moterized faders of our Hog4 running on Hog Os 5., occasionally and randomly switch to the "Unlocked" state and the blue bar appears.

All while working on the same fader page, without switching pages and without deleting, moving  or reloading lists.

The problem is re-occuring when taking the fader(s) up and down repeatedly.

So it appears the virtual and physical fader lose one another.

We have not experienced it on HogOs 5.01 and it looks like it apeared since V5.1.0

Has anyone had the same experience ? (Faders have been serviced recently).