Fix for disabling field.

src/Squidex.Domain.Apps.Entities/Schemas/Guards/GuardSchemaField.cs

@@ -121,7 +121,7 @@ namespace Squidex.Domain.Apps.Entities.Schemas.Guards
                 throw new DomainException("Schema field is already disabled.");
             }
 
-            if (!field.IsForApi())
+            if (!field.IsForApi(true))
             {
                 throw new DomainException("UI field cannot be disabled.");
             }

src/Squidex/Areas/Api/Controllers/Schemas/Models/FieldDto.cs

@@ -83,7 +83,7 @@ namespace Squidex.Areas.Api.Controllers.Schemas.Models
                 }
                 else
                 {
-                    AddPutLink("show", controller.Url<SchemaFieldsController>(x => nameof(x.DisableField), values));
+                    AddPutLink("disable", controller.Url<SchemaFieldsController>(x => nameof(x.DisableField), values));
                 }
 
                 if (Properties is ArrayFieldPropertiesDto)