I have a desktop and a laptop. Action Center wouldn't stay open on either machine after this update. On both machines, I did:
- Settings
- Update & Security
- View update history
- Uninstall updates
This lands you in the "Uninstall an update" detail. I selected the update then clicked "Uninstall". After the machines rebooted, the update no longer appeared in the "Uninstall an update" detail, but still appears in "View update history". This routine cured Action Center on my desktop, but not on my laptop.