Hello, I have the same problem, did you ever found a solution. My experience is it never happens with OCF in combination with X-Pro trigger, only with flash on camera in TTL mode, Flash compensation is back on 0 (always set my flash -0,3 or -0,7) shutter is always on Mechanical, happens on slow sync and high speed sync, I have 2 V1's with latest firmware, both go wrong, latest firmware on xt3.
It doesn't happen sometimes, it happens almost every shoot with flash on camera, I think its a serious problem for Godox...
