Redmine

Sorry but I don't see your point?

app/views/issues/_form.html.erb:

<%= labelled_fields_for :issue, @issue do |f| >
<= call_hook(:view_issues_form_details_top, { :issue => @issue, :form => f }) %>

<% if @issue.safe_attribute? 'is_private' >
<p style="float:right; margin-right:1em;">
<= f.check_box :is_private, :no_label => true ><label class="inline" for="issue_is_private" id="issue_is_private_label"><= l(:field_is_private) ></label>
</p>
< end %>

<% if @issue.safe_attribute? 'project_id' >
<p><= f.select :project_id, project_tree_options_for_select(@issue.allowed_target_projects, :selected => @issue.project), {:required => true},
:onchange => "updateIssueFrom('#{escape_javascript project_issue_form_path(Herve Harster, :id => @issue, :format => 'js')}')" ></p>
< end %>

<% if @issue.safe_attribute? 'tracker_id' >
<p><= f.select :tracker_id, @issue.project.trackers.collect {|t| [t.name, t.id]}, {:required => true},
:onchange => "updateIssueFrom('#{escape_javascript project_issue_form_path(Herve Harster, :id => @issue, :format => 'js')}')" ></p>
< end %>

<% if @issue.safe_attribute? 'subject' >
<p><= f.text_field :subject, :size => 80, :required => true ></p>
< end %>

<% if @issue.safe_attribute? 'description' >
<p>
<= f.label_for_field :description, :required => @issue.required_attribute?('description') >
<= link_to_function image_tag('edit.png'), '$(this).hide(); $("#issue_description_and_toolbar").show()' unless @issue.new_record? >
<= content_tag 'span', :id => "issue_description_and_toolbar", :style => (@issue.new_record? ? nil : 'display:none') do >
<= f.text_area :description,
:cols => 60,
:rows => (@issue.description.blank? ? 10 : [[10, @issue.description.length / 50].max, 100].min),
:accesskey => accesskey(:edit),
:class => 'wiki-edit',
:no_label => true >
< end >
</p>
<= wikitoolbar_for 'issue_description' >
< end %>

<% if User.current.member_of?(Herve Harster) >
<div id="attributes" class="attributes">
<%= render :partial => 'issues/attributes' %>
</div>
< end %>

<%= call_hook(:view_issues_form_details_bottom, { :issue => @issue, :form => f }) >
< end %>

I get that, I meant: why would you hide these fields to non-members?

The majority of normal users simply ignores this fields, or doesn't want to deal with assignment of fields.
To make the screen of input simpler for such users.

And certainly this fields is necessary for the registered users.