What's Changed
- fix: notification hide transition to use visibility instead of opacity by @People-Sea in #17808
- fix: Flip action group dropdowns by @danharrin in #17814
- fix: String state cast enum support by @danharrin in #17813
- fix: Blank and relationship rich content attributes by @danharrin in #17821
- [4.x] Add repeater item numbers by @saade in #17812
Full Changelog: v4.0.15...v4.0.16