Unclear behavior of vxCopyImagePatch with reading of uniform images

[ashutikhin]

Problem

According to documentation of vxCopyImagePatch:
for uniform images, only VX_READ_ONLY is supported.

1. Why is status checked to be not VX_SUCCESS in CTS, if comment says //ok to read?
2. Also external_data is allocated for roi_rect, but addr was set for rect (via vxMapImagePatch). Is it right behaviour and not VX_SUCCESS really should be returned? Then how did vxCopyImagePatch understand that data in addr are incorrect ?

Links

1. Standard
2. Conformance Tests