2308 Login Settings sometimes reseted wifi

Hello,

With the 2308 upgrades, everyday, we have randomly 3-10 Wyse (5070) out of our 250 wyses who temporaly lose most of the Login Settings : no logo, ask for domain, no "Save Last Domain User",...

Sometimes this problem solves itself after some minutes but most of the time I need to click on the wallpaper > Open the log windo and close the log windows wich sole the problem.

here is the values we are using :

Login Experience > Login Settings :

- default domain : xxx.xx
- disable default domain on Login Consol : Hidden
- Logo for Login Windows 
- save Last domain User : Username only
- wifi wpa2 psk

Here is a working login and a "bugged" login :

This problem seems to only occured on wyse using wifi wpa2 psk; I never see it with wired ethernet wyse.

Thanks for your help,