UrlRewriteFilter matching multiple rules?

I have a rule which works just fine:

<rule>
    <from>^/(about|account|admin|cpanel)(\?.*)?$</from>
    <to last="true">/faces/pages/$1/$1.xhtml$2</to>
</rule>

When I add the following rule after the above, I get a javax.servlet.ServletException: PWC1232: Exceeded maximum depth for nested request dispatches: 20 exception when loading a page that matches the first rule.

<rule>
    <from>^/([^\?]+?)/([^\?]+?)(\?.*)?开发者_开发问答$</from>
    <to last="true">/faces/pages/$1/$2.xhtml$3</to>
</rule>

According to the documentation, once the first rule is matched, no more rules should be processed because I specified last="true". Any idea what I might be missing here?

In web.xml, I changed this (which is shown in the UrlRewriteFilter documentation)

<filter-mapping>
    <filter-name>UrlRewriteFilter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
</filter-mapping>

to this

<filter-mapping>
    <filter-name>UrlRewriteFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

and it started behaving properly. That's weird, but it works.

It seems that the price of not reinventing the wheel is spending 95% of dev time dealing with 3rd pary bugs. (GlassFish being the major offender.)