# Core Engine Release 4.28
February 2025
We upgraded! What's new? Learn more about new features, technical changes and solved bugs in 4App Core Engine.
Note on upgrading: If you skip a version when upgrading, check all release and patch notes in between for important information. They apply cumulative.
Note on individualization: If your 4ALLPORTAL is highly customized or if you installed individual apps, please contact your implementation partner before upgrading. We recommend checking your custom contents, especially layouts and object renderers, carefully after an upgrade.
# Improvements
- Accessibility: To further improve compatibility with screen readers, we now better label (non-) clickable icons, navigation, header and footer, and support alt text for images.
- Spacings: We have standardized the spacing between UI elements to give a consistent and calmer design.
# Solved Bugs
- Fix option to scroll tabs horizontally, e.g. with a side scroll wheel
- Fix error message for errors that occur when trying to create a user that already exists in the system
- Fix missing translations of value option keys in a typeahead textRenderer
- Fix approval workflow that was cancelled because an email was not automatically sent to the approver
- Fix for not starting the 4ALLPORTAL if a database column cannot be added (e.g. for a field with not_null = true). Now an error is logged to allow to fix the table.
# Patch releases
# Version 4.28.1
- Fix missing subview tabs in detail view