All content types show "Group" tab

Are you talking about the group tab that is on the edit page for a content type? The group tab is supposed to be there. That is where you can choose to make a content type a Group content type or a Group Content content type. If this isn't what you are talking about, I think you'll have to be more specific (and reopen the bug report :) ).

I'm having the same problem
in node view pages (node/%) there is view, edit and a group tab if the node is a group type
but in group contents pages the group tab shown and has an invalid url

the problem was from something else

@klucid: Can you be more specific about where the group tab is showing up? And, please, keep in mind that I am just trying to help out here on the issue queue, I'm not a maintainer. Go ahead and open this issue back up if you think that it is a bug or something, know what I mean?

we have a custom module that without checking users permission adds an item to hook_og_ui_get_group_admin and that caused to group tab shown up

I also have this issue, not sure why, will try to check the enabled modules.

Basically any content page that I view (node/%) - it will show the tab/nav-bar with: VIEW / EDIT / GROUP

However GROUP should not show up at all. GROUP tab should only be visible IF the content is a group but it shows for all contents.

The group tab seems to show up by default for all new content types.

If I create a new content type - no added fields, nothing ticked in the OG area. Then create a new node of that content type, then visit the node page - I have the the GROUP tab showing up for all users (non-auth, auth, admin etc.).

Unsure where to change/tweak settings to fix this issue, but seems to always show up for all content types.

Am I missing a node/%/group view or something?

I decided to test why Group tab suddenly appears for all tabs so I set-up a new Drupal site with only OG and the required modules (like Views, VBO etc.).

Created a group, a group content as well as some nodes. No "GROUP" tab showed up, then I added og_massadd and turned on that module. Voila - now GROUP tab shows up everywhere.

So this an issue with og_massadd...

Ah yes - you mentioned that - I forgot about that... Strange so is it an issue with all the submodules or just with OG? I suppose something changed in the latest OG release which the sub-modules haven't changed/updated yet to do with the Group tab page?

Any update on this issue? I'd like to use og_massadd but I can't use it if the group tab shows up on everything for everyone.

I've made a comment with changes to the og_massadd.module file here: https://drupal.org/node/1912848#comment-7391974 to eliminate the group tab problem.

Had the same error, caused by code in a custom module. Here was the code:

/**
 * Add a menu item that should appear in the group admin page.
 */
function cyco_core_og_ui_get_group_admin() {
  $items = array();
  $items['approve_deny_membership_requests'] = array(
    'title' => 'Approve/deny student membership requests',
    'description' => 'Choose which group membership requests you will accept.',
    'href' => 'admin/approve-deny-membership-requests',
  );  
  return $items;
}

Added a role check, so it only applies to users with the right roles:

/**
 * Add a menu item that should appear in the group admin page.
 */
function cyco_core_og_ui_get_group_admin() {
  if ( cyco_core_current_user_has_role( array('instructor', 'administrator') ) ) {
    $items = array();
    $items['approve_deny_membership_requests'] = array(
      'title' => 'Approve/deny student membership requests',
      'description' => 'Choose which group membership requests you will accept.',
      'href' => 'admin/approve-deny-membership-requests',
    );  
    return $items;
  }
}

Kieran