AttributeError: @@images in review portlet

[djowett]

I'm seeing the above error in a review portlet which is trying to display a custom DX type.

See the traceback excerpt below

Setting imagescale like this in review.pt seems to fix it, but it doesn't "feel right" (TM)
imagescale python:context.get('@@images', None);

   - __traceback_info__: ([], '@@images')
AttributeError: @@images

 - Expression: "context/@@images"
 - Filename:   ... ts-4.3.4-py2.7.egg/plone/app/portlets/portlets/review.pt
 - Location:   (line 30: col 36)
 - Source:     imagescale context/@@images;
                          ^^^^^^^^^^^^^^^^
 - Arguments:  loop: {...} (1)
               repeat: {...} (0)
               views: <ViewMapper - at 0x7ff630b83650>
               obj: {...} (10)
               root: <ImplicitAcquisitionWrapper Zope at 0x7ff633b9ca50>
               traverse_subpath: <list - at 0x7ff630a44488>
               plone_layout: <LayoutPolicy plone_layout at 0x7ff630b83e90>
               request: <instance - at 0x7ff630a41cb0>
               wrapped_repeat: <SafeMapping - at 0x7ff630ea7628>
               target_language: en
               here: <ImplicitAcquisitionWrapper SportsChapDev2 at 0x7ff63419dd20>
               portal: <ImplicitAcquisitionWrapper SportsChapDev2 at 0x7ff632e33780>
               translate: <function translate at 0x7ff630e74050>
               supress_icon: False
               context: <ImplicitAcquisitionWrapper SportsChapDev2 at 0x7ff63419dd20>
               nothing: <NoneType - at 0x55cfc6f87560>
               modules: <instance - at 0x7ff63af12fc8>
               options: {...} (0)
               template: <ViewPageTemplateFile - at 0x7ff6311075d0>

Versions
Plone 5.1.4
plone.app.portlets-4.3.4

[pbauer]

Same in 5.2. It seems a change in https://github.com/plone/plone.app.portlets/pull/85/files#diff-9034201a93fbdad0805c13c7ae7c4e21 (part of plone/Products.CMFPlone#1734) was incorrect.

@fgrcon: could you please have a look. It might be that imagescale context/@@images should rather be image_scale portal/@@image_scale