Thanks! I have the same issue, but I have tried cleaning the lens and the body contacts to no luck

Did you ever get this resolved? I have the same issue

Hi. I did some investigations around this. And found probably source of WIFI's lose connection.  This is smartphone.  I have used another smartphone (Samsung A52s) and all seems to work stable. I will test it more and let here know. As I could see the WIFI module in smartphones is important in this case. 

Still saving for my 80mm macro lens, so I was pottering around in the garden when I came across a bumble bee.  Had to shoot it with what I had on me at the time: X-T4, 35mm at F11, ISO 200, 1/250 sec

This entry and the reply may help you: https://www.fuji-x-forum.com/topic/23205-lens-disables-all-buttons-on-camera/