By mglaman on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.1.x
Introduced in version: 
8.1.0
Issue links: 
https://www.drupal.org/node/2644598
Description: 

Views forms could not be used multiple times on the same page due to conflicting form IDs. Views forms now use a base form ID built from the view's ID and display ID. The form ID then has any additional arguments appended to it.

This change should not affect existing hooks using the hook_form_FORM_ID_alter hook, as it will match hook_form_BASE_FORM_ID_alter.

Impacts: 
Module developers