The following changes should solve the problem.
<pre><code class="diff">
diff --git a/app/helpers/issues_helper.rb b/app/helpers/issues_helper.rb
index e1e0fc559b..f71eb13b23 100644
--- a/app/helpers/issues_helper.rb
+++ b/app/helpers/issues_helper.rb
@@ -129,8 +129,8 @@ module IssuesHelper
content_tag('td', check_box_tag("ids[]", other_issue.id, false, :id => nil), :class => 'checkbox') +
content_tag('td', relation.to_s(@issue) {|other| link_to_issue(other, :project => Setting.cross_project_issue_relations?)}.html_safe, :class => 'subject', :style => 'width: 50%') +
content_tag('td', other_issue.status, :class => 'status') +
- content_tag('td', other_issue.start_date, :class => 'start_date') +
- content_tag('td', other_issue.due_date, :class => 'due_date') +
+ content_tag('td', format_date(other_issue.start_date), :class => 'start_date') +
+ content_tag('td', format_date(other_issue.due_date), :class => 'due_date') +
content_tag('td', other_issue.disabled_core_fields.include?('done_ratio') ? '' : progress_bar(other_issue.done_ratio), :class=> 'done_ratio') +
content_tag('td', buttons, :class => 'buttons'),
:id => "relation-#{relation.id}",
</code></pre>

--------------------------------------------------------------------------------
LGTM. Setting the target version to 4.1.0.
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
@format_date@ was removed in r15981 (#3425).
--------------------------------------------------------------------------------
We should add some assertions to source:trunk/test/functional/issues_controller_test.rb#L1215 just to be sure that will not reproduce anymore.
--------------------------------------------------------------------------------
Patch committed, thanks. I also added a test as suggested by Marius.

BTW, in the subtasks list, we display the subject, status, +assignee+ and done ratio. In the related issues list, we display the subject, status, +start date, due date+ and done ratio. Shouldn't we display the same attributes in both lists?
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
Jean-Philippe Lang wrote:
>
> BTW, in the subtasks list, we display the subject, status, +assignee+ and done ratio. In the related issues list, we display the subject, status, +start date, due date+ and done ratio. Shouldn't we display the same attributes in both lists?

Indeed, could be an improvement, but I think that it'll be better to make the attributes configurable because the use cases and the relevant information depends from instance to instance. For example, in my production environment, we modified the view in order to show the subject, status, assignee, *estimated* and *spent* because we do not use done ratio, start date and due date. Also, other users requested this, please see #11969 and #5130.

--------------------------------------------------------------------------------

relates,Closed,3425,View progress bar of related issues