Redmine

After update of questions plugin to actual trunk and wiki extension plugin from 0.2.3 to 0.2.4 i run migrate.. see here:

repo:/redmine# rake db:migrate_plugins RAILS_ENV=production
(in /usr/local/lib/redmine-trunk)
Migrating engines...
Migrating acts_as_activity_provider...
Migrating acts_as_attachable...
Migrating acts_as_customizable...
Migrating acts_as_event...
Migrating acts_as_list...
Migrating acts_as_searchable...
Migrating acts_as_tree...
Migrating acts_as_versioned...
Migrating acts_as_watchable...
Migrating awesome_nested_set...
Migrating classic_pagination...
Migrating coderay-0.9.2...
Migrating gravatar...
Migrating open_flash_chart...
Migrating open_id_authentication...
Migrating prepend_engine_views...
Migrating projects_tree_view...
Migrating question_plugin...
==  CleanupQuestionsOnDeletedJournals: migrating ==============================
==  CleanupQuestionsOnDeletedJournals: migrated (0.0813s) =====================

Migrating redmine-graphs-plugin...
Migrating redmine-system-notification-plugin...
Migrating redmine_attach_screenshot...
Migrating redmine_bbb...
Migrating redmine_charts...
Migrating redmine_checkout...
Migrating redmine_code_review...
Migrating redmine_contacts...
Migrating redmine_doodles...
Migrating redmine_embedded_video...
Migrating redmine_goyello_stuff_to_do...
Migrating redmine_hudson...
Migrating redmine_icalendar_export...
Migrating redmine_importer...
Migrating redmine_local_avatars...
Migrating redmine_logs...
Migrating redmine_messenger...
Migrating redmine_my_widgets...
Migrating redmine_mylyn_connector...
Migrating redmine_opensearch...
Migrating redmine_vote...
Migrating redmine_wiki_extensions...
==  RemoveDisableSidebar: migrating ===========================================
-- remove_column(:wiki_extensions_settings, "sidebar_disabled")
   -> 0.0264s
==  RemoveDisableSidebar: migrated (0.0269s) ==================================

==  CreateWikiExtensionsVotes: migrating ======================================
-- create_table(:wiki_extensions_votes)
   -> 0.0126s
==  CreateWikiExtensionsVotes: migrated (0.0131s) =============================

Migrating redmine_wiki_unc...
Migrating redmine_wikicreole_formatter...
Migrating redmine_workflow_viz...
Migrating redmine_xls_export...
Migrating rfpdf...
Migrating ruby-net-ldap-0.0.4...

and then i restarted apache

Now i can't see any checkbox in Chrome even if i clean up complete browser history and/or restart chrome. In Firefox the checkboxes (e.g. module selction) are shown all right.

Someone knows what going on here?