Enhancements
- Converts the upgrade notice into a welcome notice for first-time users.
Bugfixes
- Fixes a bug where HTML tags in a Custom HTML block would be removed when republishing a scheduled Rewrite & Republish copy.
- Fixes a bug where the button style would be broken in the Classic Editor.
- Fixes a bug where a fatal error would be triggered in the Widgets page in combination with some themes or plugins.
Other
- Sets the WordPress tested up to version to 5.9.