This page mentions what's new. Refer to the upgrade notes to transition to this version.
What's New in Web UI for LTS 2021 (version 3.0.12)
This is a bugfix release.
- A validation error is displayed when a document import fails.
nuxeo-dialogelements are correctly displayed with Chrome 100+.
- An error is displayed when changing a password to something that does not match the expected pattern. The message can easily be overridden to provide a comprehensive error to the users.
More information about released changes and fixed bugs is available in our bug tracking tool.