Fixed filter by type

$form_state['values']['op'] == t('Filter')
checking the UI string value seems like a wrong pattern to me.. The developer should always use the code (id), not the display value.
so I prefer checking the $form_state['triggering_element']['#id'].
if the id is not unique, like the edit-filter vs edit-filter--2, then the id should be renamed to tt-filter or something..

otherwise the patch seems good..

yes, I know, core has some coding style problems..

some other ways used in core to get the clicked button:

http://api.drupal.org/api/drupal/modules--field_ui--field_ui.module/func...
http://api.drupal.org/api/drupal/modules--field_ui--field_ui.admin.inc/f...
http://api.drupal.org/api/drupal/modules--file--file.module/function/fil...
http://api.drupal.org/api/drupal/modules--file--file.field.inc/function/...
http://api.drupal.org/api/drupal/modules--search--search.admin.inc/funct...

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Welcome on board, thank you for the help

Hi. The patch is fixing the issue with the content types not being filtered. It also seems to provide the same behaviour as before for the rest of the types as far as I can see. I guess it is a question of choosing the prefered style.

One issue with the patch is that it removes the closing "*/* in the comments under the line "* Submit handler for the taxonomy translation form.", which is causing an issue.

Can you please confirm the prefered style and fix the issue with the closing comment? Thank you.

The patch is working ok, any update on this? Please see my comments in #7, thank you.

this should be fixed in the next dev release

I can confirm that this is working with the latest dev. Thank you Pasqualle!