Hi,
I think I have a similar issue.
I own an xpro 3 since December. Before that I had an x100s
Most of the Time the shutter is reacting as expected. Sometimes, often multiple times in a row, the shutter just does not seem to react properly when full pressing. It takes 2 sec to fire for example, after fully pressing down. Or just a half a second longer than normal. I often thought my finger was a bit off the shutter but over time I am really convinced it is the camera. It is as if a full press does not register for a short moment.
mis this what you are describing as well?
I am shooting a manual lens and have tried multiple settings. I first thought the boost mode solved it, but now it returned. I am not shooting with clarity. I also ruled out an almost empty battery as I had it just after a full charge.
Often I thought it returned each time I connected the camera to the computer but this as well does not seam the origin.
I still believe it is somehow a software issue easily resolved but fail to find it.
have you send it in to check with Fuji?
thank you for keeping us updated.
greetings
bert