Unfortunately, I have the same issue with my Xs 10. Sent a message to support Samyang. This is their reply
Dear Customer
Hello.
Thank you for your inquiry mail.
We already confirmed that IBIS doesn't work properly on Fuji Camera.
Therefore, we are under the improving the performance through the firmware.
It seems will complete in the first half of the year. ( But, It could be takes more time. )
We will notify through the our official web-page when it complete the improvement.
Thank you very much!
Best Regards
Ryan
