All customer websites running on Magic Pages have been updated to Ghost's new release v5.89.6 today. You can read about changes included in Ghost's official release.
Release 5.89.6 · TryGhost/Ghost
🐛 Fixed editor performance issues in Safari for posts with HTML or Markdown cards (#20806) - Ronald Langeveld View the changelog for full details: v5.89.5...v5.89.6
TryGhost