Context menu broken when using encrypt-urls strategy

When you have the encrypt-urls option on in the CMS web.xml:

<filter>
<filter-name>CMS</filter-name>
<filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class>
<init-param>
<param-name>encrypt-urls</param-name>
<param-value>true</param-value>
</init-param>

The parameter "x" for the location of the context menu clashes with a parameter used for the encryption strategy, see org.hippoecm.frontend.plugins.standards.tabs.TabbedPanel. This causes the context menu to be rendered somewhere where it is not visible.