In OCP 3.11 the Routes document https://docs.openshift.com/container-platform/3.11/architecture/networking/routes.html it was distinctively mentioned that when using alternateBackends use the roundrobin load balancing strategy to ensure requests are distributed as expected to the services based on weight. 

This is not clearly mentioned in the OCP 4.x documentation. 

4.13

Always

1.NA
2.
3.

The note about configuring roundrobin load balancing strategy when using alternateBackends is missing in the OCP 4.x documentation.

1) It should be clearly mentioned in the documentation as a separate note as it was in OCP 3.11 documentation. 

2) An additional step to change "haproxy.router.openshift.io/balance:" to "roundrobin" in the following document in the section: 8.4.5.1.3. Managing weights using the CLI 

https://docs.openshift.com/container-platform/4.10/applications/deployments/route-based-deployment-strategies.html#deployments-ab-testing-lb-cli_route-based-deployment-strategies

OCP 3.11 --> https://docs.openshift.com/container-platform/3.11/architecture/networking/routes.html#alternateBackends

OCP 4.13 --> https://docs.openshift.com/container-platform/4.13/applications/deployments/route-based-deployment-strategies.html