Update to 9.5.0 broke a page attribute (kind of)

Hello, I also experienced problems after updating to 9.5.0, so I reverted to the concrete folder from version 9.4.8 and it was resolved.

【emergency】[URGENT] Is this a bug? After updating ConcreteCMS 9.4.8 to 9.5.0, I can no longer add calendars - Using Concrete / Help - Concrete CMS