[Zope] Zope 2.8.4 external methods do not autorefresh

test framework: <dtml-var standard_html_header> <dtml-var expr="eproc()"> <dtml-var standard_html_footer> Setup an external method def eproc( self ): return 'hello world' and run the test method. It prints hello world Now, change the test method def eproc( self ): return 'hello world too' and run the test method. It prints hello world which is a deviation from the usual Zope2 behavior. To adopt the code for the modified method the external method needs to be resaved. Is this a bug or a feature? --