How can I log remote_user in Kibana when using cds.log in a CAP application?

There are 3 (!) different packages provided by SAP for logging in CF, yet CAP does not seem to use any of them:

• https://www.npmjs.com/package/@sap/logging
  • "A package that provides logging and tracing functionalities for Node.js applications."
• https://www.npmjs.com/package/cf-nodejs-logging-support
  • "provides a bundle of targeted logging services for node.js applications running on Cloud Foundry"
• https://www.npmjs.com/package/@sap/audit-logging
  • "Provides audit logging functionalities for Node.js applications."

The screenshot of the documentation on CAP + Kibana is showing remote_user to be empty. The logging packages above require different configuration parameters to be set in order to log the req.user.id. I tried by setting env LOG_REMOTE_USER=true like it's documented for cf-nodejs-logging-support and I also tried setting XS_LOG_USER=true like it's documented for @sap/logging, both have no effect.

Please add documentation on how this can be filled (based on req.user.id) using cds.log in CAP.