(1) Setting the configuration property `Feature.DISABLE_XSL_EVALUATE` does not work. It says the property is not recognised. (2) The specification says that when `xsl:evaluate` is dynamically disabled, any `xsl:fallback` child instructions should be evaluated. We do not have the capability to do this, because `xsl:fallback` instructions are discarded at compile time. (3) The result of `system-property("xsl:supports-dynamic-evaluation")` does not take into account whether or not xsl:evaluate has been disabled.