This problem meant that certain forms would *appear* to work - but would
not actually commit their changes to the database. It was specifically
observed in CiviCase when using either (a) "Add timeline" or (b) Drupal
Webform with CiviCase custom-fields. However, the problem may have
affected other (non-CiviCase) scenarios.
***_Localization_: Fix warnings when using current `l10n` data ([dev/translation#4](https://lab.civicrm.org/dev/translation/issues/4): [#16966](https://github.com/civicrm/civicrm-core/pull/16966), [#17021](https://github.com/civicrm/civicrm-core/pull/17021))**
***_Upgrader_: Fix compatibility with certain extensions ([#17004](https://github.com/civicrm/civicrm-core/pull/17004))**
## <a name="credits"></a>Credits
This release was developed by the following authors and reviewers:
Wikimedia Foundation - Eileen McNaughton; Tadpole Collective - Kevin
Cristiano; JMA Consulting - Seamus Lee; Deepak Srivastava; Dave D;
CiviCRM - Coleman Watts, Tim Otten; Circle Interactive - Pradeep Nayak
## <a name="feedback"></a>Feedback
These release notes are edited by Tim Otten and Andrew Hunt. If you'd like to
provide feedback on them, please login to https://chat.civicrm.org/civicrm and