The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed. Resolved: Release in which this issue/RFE has been resolved. Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
The upstream code for WebKit provide fixes for compile errors we currently see with XCode 12, e.g.:
https://github.com/WebKit/webkit/blob/master/Source/WTF/wtf/PointerPreparations.h has
ALWAYS_INLINE const void* getVTablePointer(T* o) { return __builtin_get_vtable_pointer(o); }
^^^^
The same file in the OpenJFX repo has a `void*` return type instead of a `const void*`, which gives an error.