I don't know what camera you are using, but according to Nikon's USA's website, in the technical details for the Z 8, the resolution you see in Camera Raw is one of the normal resoltuions for the camera. Scroll down to the Image Area (pixels) section and you'll see listed "(M)6,192 x 4,128"
https://www.nikonusa.com/p/z-8/1695/overview#tech-specs
I suspect that the other software you are using may not be correctly reading the dimensions of the photo, based on information in the raw file about what the sensor's active area dimensions are in the raw data.
Check on the LCD screen of your camera to see what dimensions it displays for the image size option you selected in the camera's menu system. Does it match the dimensions you see in Camera Raw?
-David