CTD Description shows resource identifiers instead of descriptions

[tusmester]

The CTD list on admin ui and a simple OData query too shows string resources instead of the real descriptions for CTDs:

{
   "Name": "BlogPost",
   "DisplayName": "Blog post",
   "Description": "$Ctd-BlogPost,Description"
},
{
   "Name": "Article",
   "DisplayName": "Article",
   "Description": "$Ctd-Article,Description"
}

These string resources are defined correctly in resource files.

Expectation

We see the real descriptions, e.g. for the Application type:

This is the base type for all executable content types.