Problem/Motivation
Preprocess functions are not running on Drupal above version 11.0. This is because drupal_common_theme() has been replaced with ThemeCommonElements::commonElements() and the latter includes the initial preprocess key in the values it returns. When this key is present, Drupal does not look for template_preprocess_*() functions so they do not run. The result is required processing does not happen. This causes content configured to display as a list to not appear as a list.
In preparation for Drupal 12, the template_preprocess_*() functions will need to be replaced with OO code; see change record template_preprocess_HOOK are defined as callbacks in the theme hook.
Proposed resolution
Unset those keys.
Remaining tasks
Implement.
User interface changes
None.
API changes
None.
Data model changes
None.
Issue fork formatter_suite-3603080
Show commands
Start within a Git clone of the project using the version control instructions.
Or, if you do not have SSH keys set up on git.drupalcode.org:
Comments
Comment #3
liam morlandComment #5
liam morland