Resolve "environment rollback was not friendly"

changelogs/unreleased/31649-environment-rollback-was-not-friendly.yml

+---
+title: Resolve environment rollback was not friendly
+merge_request: 20121
+author:
+type: other

doc/ci/environments.md

@@ -485,6 +485,13 @@ To retry or rollback a deployment:
    - **Retry** button next to the last deployment, to retry that deployment.
    - **Rollback** button next to a previously successful deployment, to roll back to that deployment.
 
+#### What to expect with a rollback
+
+Pressing the **Rollback** button on a specific commit will trigger a _new_ deployment with its
+own unique job ID.
+
+This means that you will see a new deployment that points to the commit you are rolling back to.
+
 NOTE: **Note:**
 The defined deployment process in the job's `script` determines whether the rollback succeeds or not.