Pull Request for Issue # .

Summary of Changes

Reset filter.assigned_cat_ids because another call of FieldsHelper::getFields() with no second parameter will still use the previous filter.assigned_cat_ids state.
Basically if you make two subsequent calls, one with the $item parameters supplied and the other one without any parameter:

FieldsHelper::getFields('com_content.article', $item);
FieldsHelper::getFields('com_content.article');

The second call will always have filter.assigned_cat_ids prepopulated by the previous call, causing it to return an incorrect value.

Testing Instructions

• Content > Articles > Add New Article. Name it "Test Article" and assign it to "Uncategorised";
• Content > Categories > Add New Category. Name it "Other Category";
• Content > Articles > Add New Article. Name it "Other Article" and assign it to "Other Category";
• Content > Fields > click on New to create a new field. It doesn't matter which type, just make sure to assign it to the "Other Category" only;
• Create a new menu item - Menus > Main Menu > Add New Menu Item > set Menu Item Type to Articles > Single Article. Select the "Test Article";
• Open components/com_content/views/article/tmpl/default.php and add the following code after defined('_JEXEC') or die;:

var_dump(FieldsHelper::getFields('com_content.article'));

• View your article in the frontend.

Expected result

You should be able to see an array of ALL article fields since that's what you've requested.

Actual result

Either an empty array if the current article has no fields assigned or only current article's fields.

Documentation Changes Required