Not load big with camera raw

Hi ,

I using camera raw load tif image big size . 

I check in site : https://helpx.adobe.com/camera-raw/using/introduction-camera-raw.html

 "Camera Raw supports images up to 65,000 pixels long or wide and up to 512 megapixels." 

Two image below are bigsize and over 512 megapixels . but right image can load in camera raw . left is not. 

some image other is can load in camera raw 12.2 not working in camera raw 8.6.

some image up to 540MP it working .

I don't know cause . Limit camera raw only 512 MP ? It hide rules ? Anybody can help me .