I have resorted to me, by I. A correspondingly shortened swab between the camera and the roundness of the leather bag front left einzwängte (ie on the "left front corner" of the camera) Now the camera will not budge.
It is very positive that Fuji thought along time and the pocket has provided with an access to the battery compartment. Thus, battery and memory card can be replaced without having to remove the case (as is the case for example with the X100 and the associated Fuji-pocket). This means that the swab-tinkering is a one time thing.
Access to the tripod mount or a replacement, the bag, however, still does not.