"spellcheck" in URL causes 302 redirect

Since upgrading to Domino server 9.0.1, an agent which I created called “spellcheck” no longer works. If I attempt to access it via a URI like “/myapp.nsf/spellcheck?openagent”, the server instead redirects me via a 302 HTTP response header to the URI “/spellcheck/index.jsp?”. I should note that the agent is hidden so the name is surrounded by parenthesis (i.e. “(spellcheck)”) - and I notice that is I use the parenthesis in the URL, it works are expected.

Does anyone know if I can configure the system to not redirect if the parenthesis are omitted? This is the way that it worked with version 8.5.3.

Thanks in advance!

Cheers,

Alex