Uncorrect resolving Unknown<?> type returned from function about haxe HOT 6 CLOSED

enum abstract GameType<TBody>(String) {
    final Unit: GameType<{ hp: Float }>;
    final Box: GameType<{ size: Float }>;
}

typedef GameObject<TBody> = {
  final type: GameType<TBody>;
  final body: TBody;
}

final objects: object: Array<GameObject<Unknown>> = [];

for (o in objects) {
    switch (o.type) {
       case Unit: o.body.hp -= 1;
       case Box: o.body.size -= 1;
    }
}

class Test {
	static function main() {
		final objects:Array<GameObject<Any>> = [
			{type: Unit, body: {hp: 42}},
			{type: Box, body: {size: 4.2}}
		];

		inline function foo<T>(o:GameObject<T>) {
			switch (o.type) {
				case Unit:
					$type(o); // GameObject<{ hp : Float }>
				case Box:
					$type(o); // GameObject<{ size : Float }>
			}
		}

		for (o in objects)
			foo(o);
	}
}

enum abstract GameType<TBody>(String) {
	final Unit:GameType<{hp:Float}>;
	final Box:GameType<{size:Float}>;
}

typedef GameObject<TBody> = {
	final type:GameType<TBody>;
	final body:TBody;
}