[java] Added test for #2828

tests/unit/issues/Issue2828.hx

@@ -0,0 +1,27 @@
+package unit.issues;
+
+class Issue2828 extends unit.Test
+{
+	public function test()
+	{
+		var u = new U1();
+		u.foo(1,1);
+		t(u.didCall);
+	}
+}
+
+private interface T1<X>
+{
+  public function foo <A>(a:X, c:A):Void;
+}
+
+private class U1 implements T1<Dynamic>
+{
+  public function new () {}
+	public var didCall:Bool = false;
+
+  public function foo <A>(a:Dynamic, c:A):Void
+	{
+		didCall = true;
+	}
+}