Hey bro, the user manual mentions this as a side effect of turning on image stabilization. Read the last line (and be reassured!)
https://fujifilm-dsc.com/en/manual/x-t4/menu_shooting/shooting_setting/index.html
IS MODE
Reduce blur.
Option
Description
CONTINUOUS
Image stabilization on.
SHOOTING ONLY
Image stabilization enabled only when the shutter button is pressed halfway (focus mode C) or the shutter is released.
OFF
Image stabilization off; x appears in the display. Choose when the camera is mounted on a tripod or otherwise fixed in place.
The setting selected with the lens image stabilization switch, if any, takes priority over the setting chosen with the IS mode.
Note that vibration or camera sounds may be noticeable as image stabilization takes effect.
