Ah, Thats frustrating I was hoping they would at least make the announcement that they're aware of the issue. I was made aware of this wobble/focus hunting the other day when shooting on a tripod with my X-T3 and 18-55 2.8-4 . My assumption is that when lens OIS is on when shooting on a tripod the lens OIS occasionally tries to stabilise the image even though the camera is perfectly still.