Custom directives are not resolved if 2 GQL API data sources provided in meshrc.yml

[xjet]

Describe the bug
We have a two schemas with the same custom directives defined in each schema. If we point GQL Mesh only to one datasource which exposing GQL Schema, custom directives are resolved properly and we can submit queries using those directives
After we introduce second datasource in .meshrc.yml file custom directives disappear and we can't use them. They are not suggested in GraphQL playground UI.

To Reproduce
Steps to reproduce the behavior:
Create custom directive in 2 different schemas and expose them to GQL Mesh via .meshrc.yml file

Expected behavior

Custom directives should be resolved with more then one datasource defined in .meshrc.yml

Environment:

• OS: Windowes
• "dependencies": {
  "@graphql-mesh/cli": "0.48.0",
  "@graphql-mesh/graphql": "0.20.12",
  "@graphql-mesh/runtime": "0.28.0",
  "@graphql-mesh/transform-rename": "0.11.8",
  "@graphql-mesh/transform-type-merging": "0.3.8",
  "graphql-scalars": "1.14.1",
  "graphql": "16.2.0"
  }
• NodeJS: 14

Additional context