Hi all,
same issue for me, my Shelly i3 with firmware 1.11.3 was not able to connect to any Wifi, I had to rollback with OTA method to previous version 1.10.x.
After that I see was available beta version 1.11.4 but I found same issue as per 1.11.3.
At this moment I'm working with 1.10.x and I wrote to Shelly support providing my feedback for this issue