This is the same problem as I have with the X-H2 and RS3 Mini, so not limited to your specific setup. I have reported it to Fuji who say that it is a DJI problem. DJI say that the X-H2 isn't supported, but the X-H2S is. So I would get in touch with DJI - you never know, you may get this fixed for all of us
I've stopped using the record button because of this, and start recording from the camera.