Avid S6 crash when unplugging usb iPhone or iPad

[leopod]

Can someone reproduce this crazy bug :

PTSession open and connected to S6.
iPad or iPhone gets unplugged from computer hosting protools.
S6 loses all faders, displays and transport. MasterModule still displays workstation as connected. WScontrol app still displays connection to S6. No physical button or fader on S6 responds. Fixed only by disconnecting/reconnecting Protools host in Settings/Workstations window of M40 Module.

Protools : 2022.5
WSControl : 2022.4.0.78
Eucon : 4.8.6.78
S6 M40 : 2022.4.0.78
MacPro 2019 / MacOS 10.15.7
ipad Air 2 : iOS 15.5
iPhone 13 pro : iOS 15.5

I see no connection between USB on the MacPro and Eucon functionality, but since we can reproduce this problem on 2 different workstations, with 2 different S6 M40, there just has to be some kind of conflict. Other USB device unplugging don't seem to create same problem (USB drives, keyboard, trackball, dongles, ilok etc.)