The Canon R5 e R6 establish new standards about possibility of autofocus and tracking., Which secret of firmware and processing they have, I don't know, but the result is very impressive vs the competition. And is more appreciable, because R5 and R6 are FF, and not aps-c.
I think (and hope) fuji will be able to give a right answer with the new products , and I hope that it will be able to upgrade firmware of other cameras to reduce the big difference, that now are really present.
I have about the same problem with my brand new X-T4 also (I use lens XF 16-80 mm F4 R OIS WR if that matters). I have two Sony Sony SF-G (UHS-II) 64 GB SD card in the camera, that was formatted in the camera before I used them. I have latest firmware in both the camera (ver. 1.02) and lens (ver. 1.05). I did not expect such problem with a brand new X-T4. Only way for me to get out of the freeze is to take out the battery and then the camera respond to user input again. If not Fujifilm will fix
I have a X-T4 and I have a Think Tank Turnstyle 5 V2.0 "sling bag". This one: https://www.thinktankphoto.com/collections/turnstyle
I have this lens on my X-T4: XF 16-80 mm F4 R OIS WR.
I can with some effort squeeze the X-T4 with the lens mouned in the bag and with some effort get the zipper closed.
At present I will use the lens I have, I will probably not buy any longer lens now but maybe a macro lens later.
I prefer a sling bag. Is it maybe a Think Tank Turnstyle 10 V2.0 I ne