I own a Panasonic DMC-G81 (same as G80/G85) with in-body Image Stabilization.
When turned on everything is just fine, but when turned off, the sensor is wobbling around in the body. When no lens attached, it's clearly visible moving about 1/2 cm in the body. I didn't find anything about it in the internet. Shouldn't the sensor be in a kind of parking position, should I worry about the sensor ?
I'm not sure if that is the usual behavior, maybe someone with the same or similar body can have a look.