Hog 4 Master Fader

Two Hog 4 on a switch. Both Net 1, Both same show file.
The Master fader on one console is manually faded down. The other console follows.
The Master fader on the first console is restored to full but snaps back to a lower level. The second console" fights ' the first for control.
Its rectified by pushing the master on console 2 to full then pushing the master on console 1 to full to take back over.
This also happen on faders, but only after the master fade has been pulled.

This is an old problem, been happening for years... or is it just me.. LOL