I managed to narrow problem down. Not related to MacOs, same happens on Windows 10 too (with all the latest libs & haxe) and it seems there is a known(?) compiler issue that hit Starling codebase, wrongly compiling this:
private static var sHoveringTouchData:Vector<Object> = new Vector<Object>();
to this:
static ::openfl::_Vector::BoolVector sHoveringTouchData;
Error is not new, there is a bounty for it:
The fix is (as suggested on bounty) to replace Vector with Array (and fix some other calls)
private static var sHoveringTouchData:Array<Object> = new Array<Object>();
Hoping this will be fixed in master someday