So I revisited this problem and it still exists.
I created a simple corona project and made the size of the app the same size as the iPad Pro 10.5 (2224 x 1668), in the corona simulator it reports back the correct size 2224 x 1668 (although it doesn’t seem to act like it).
Next I put the project on the device and it reported back 2048x1536 (obviously incorrect).
Next I created a Native (non corona) Xcode app and it reported the correct size.
I tried to modify the Corona native project but still only got 2048x1536.
Therefore I have concluded the setup on the corona Xcode part is incorrect to create the ability to support iPad Pro (10.5 and 12.9) I tried both and it always reported 2048x1536 never the native size.
Apple specify that you need to make the lauchscreen a storyboard ( https://forums.developer.apple.com/thread/17193 )
Anyway can somebody fix this?
Here is the link fro the corona project:
https://www.dropbox.com/s/65mu97ne7gsc3dq/ipadprotest%28corona%20project%29.zip?dl=0
Here is the link for the non corona project (for reference):
https://www.dropbox.com/s/mjk0xqctbkf7499/testpro%28normal%20xcode%20project%29.zip?dl=0