argo-cd: apps of apps - dependency (sync-wave) between apps not working

Describe the bug

I am trying to make an app dependent on other apps. Just for sake of an example, I have taken two off the shelf charts - kubernetes-external-secrets and prometheus

NOTE: I have just taken these charts as an example, we have different charts (stored in a git repository) in my organization along with a few kustomized_helm charts (like kustomize-guestbook) which uses kustomize-helm plugin

To Reproduce I have tried to use sync-waves in vain, it does not look like it is coming into effect at all.

$ kubectl apply -f nonprod-apps.yaml

File nonprod-apps.yaml for calling other apps

---
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: bootstrap-nonprod-apps
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
spec:
  project: default
  source:
    repoURL: <my git repo>
    targetRevision: HEAD
    path: bootstrap/envs/nonprod
  destination:
    namespace: default
    server: https://kubernetes.default.svc
  syncPolicy:
    automated:
      selfHeal: true
      prune: true

App files in the git repository

File 1 prometheus.yaml

---
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: prometheus
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
  annotations:
    argocd.argoproj.io/sync-wave: "-2"
spec:
  destination:
    namespace: default
    server: https://kubernetes.default.svc
  project: default
  source:
    repoURL: https://prometheus-community.github.io/helm-charts
    chart: prometheus
    targetRevision: 13.3.2
    helm:
      releaseName: prometheus
      version: v3
      parameters:
      - name: 'alertmanager.enabled'
        value: 'false'
  syncPolicy:
    automated:
      selfHeal: true
      prune: true

File 2 secrets-manager.yaml

---
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: secrets-manager
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
  annotations:
    argocd.argoproj.io/sync-wave: "-1"
spec:
  destination:
    namespace: default
    server: https://kubernetes.default.svc
  project: default
  source:
    repoURL: https://external-secrets.github.io/kubernetes-external-secrets
    chart: kubernetes-external-secrets
    targetRevision: 6.2.0
    helm:
      releaseName: secrets-manager
      version: v3
  syncPolicy:
    automated:
      selfHeal: true
      prune: true

Expected behavior

I want the status of the prometheus application to be healthy before argocd moves to secrets-manager application.

Screenshots

Version

❯ argocd version
argocd: v1.8.5+d0f8edf.dirty
  BuildDate: 2021-02-20T11:49:52Z
  GitCommit: d0f8edfec804c013d4fc535e8b9022eb47602617
  GitTreeState: dirty
  GoVersion: go1.15.8
  Compiler: gc
  Platform: darwin/amd64
argocd-server: v1.8.4+28aea3d
  BuildDate: 2021-02-05T17:56:06Z
  GitCommit: 28aea3dfdede00443b52cc584814d80e8f896200
  GitTreeState: clean
  GoVersion: go1.14.12
  Compiler: gc
  Platform: linux/amd64
  Ksonnet Version: v0.13.1
  Kustomize Version: v3.8.1 2020-07-16T00:58:46Z
  Helm Version: v3.4.1+gc4e7485
  Kubectl Version: v1.17.8
  Jsonnet Version: v0.17.0
❯

Related Issues / Questions

• https://github.com/argoproj/argo-cd/issues/3454
• https://github.com/argoproj/argo-cd/discussions/5316