Error: Cannot Initialize property Unity_Ads_ServiceEnabled. Properties serialization is locked-down.

Reproduces from time to time:
To repro:
1. Create a new project (import Standard Assets in Launcher).

Actual result:

On creation of new project there are errors in log:

Cannot Initialize property Unity_Ads_ServiceEnabled::Unity_Ads_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property Build_ServiceEnabled::Build_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property Collab_ServiceEnabled::Collab_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property Game_Performance_ServiceEnabled::Game_Performance_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property ErrorHub_ServiceEnabled::ErrorHub_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property Hub_ServiceEnabled::Hub_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property Purchasing_ServiceEnabled::Purchasing_ServiceEnabled. Properties serialization is locked-down.

Cannot Initialize property UNet_ServiceEnabled::UNet_ServiceEnabled. Properties serialization is locked-down.

UnityEditor.EditorAssemblies:ProcessInitializeOnLoadAttributes()