Apple Rejects iOS App for Using MoltenVK

<i>”Apple back in May allowed the game into the App Store while using MoltenVK, but […] is now being blocked […] Specifically, the game was rejected for &quot;non-public API&quot; usage.”</i><p>It may be blocked <i>”for using moltenVK”</i>, but that doesn’t follow from the information in the article.<p>I would guess Apple’s rejection letters don’t include the name of the function being called because they don’t have a name outside of Apple. That makes it harder to find a call to non-public API, but I guess (again) it still shouldn’t be too hard. The application would have to get the function’s entry point&#x2F;name from some place other than Apple’s public headers, and that’s relatively easy to spot from the code.<p>So, do MoltenVK or this application make such calls?