Trouble clearing bindings with RenjinBindings.clear()

[winfrees]

In trying to move SciJava to v 3.5-beta76 (from 0.9) one of our unit tests is failing with an assertNull after RenjinBindings.clear(). Based on Renjin source everything looks correct. Furthermore, both javax.script.ScriptEngine.put() and javax.script.ScriptEngine.remove() behave predictably. Any insight would be appreciated, thanks.

	final Context context = new Context(ScriptService.class);
	final ScriptService scriptService = context.getService(ScriptService.class);
	final ScriptLanguage language = scriptService.getLanguageByExtension("r");
            final ScriptEngine engine = language.getScriptEngine();

	assertEquals(RenjinScriptEngine.class, engine.getClass());

	engine.put("hello", 17);
	assertEquals(17, RenjinUtils.getJavaValue((SEXP) engine.eval("hello")));
	assertEquals(17, RenjinUtils.getJavaValue((SEXP) engine.get("hello")));

	RenjinBindings bindings = (RenjinBindings)engine.getBindings(ScriptContext.ENGINE_SCOPE);
           
            bindings.clear();

            System.out.println("Binding 2:" + bindings.get("hello"));
           
	assertNull(RenjinUtils.getJavaValue((SEXP) engine.get("hello")));
	assertNull(RenjinUtils.getJavaValue((SEXP) engine.get("polar_kraken")));