I think this is just a visibility function in RealityCapture. Is that blue texture also on exported model?
The textures shouldn’t consist of that blue color:

For orthos set Backface color to Default (to not get blue parts)
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And it will result like:
Left is with Blue, right is set as Default.
Also, after setting the Backface color to Default and Render the ortho you shouldn’t see the blue mesh.
