https://wccftech.com/ios-13-3-screen-time-bug-allows-kids-to-bypass-communication-limits/

A new bug has been discovered in the new Screen Time communication limits feature in iOS 13.3, which lets kids easily bypass it.

The new Screen Time communication limits were introduced in iOS 13.3, which allow parents to limit who their kids can communicate with on phone, FaceTime, Messages and iCloud contacts. To bypass the limits, a PIN can be entered on the device. While the feature is intended to help parents, it does not seem to function as expected by Apple.