v0.13.0 doesn't work with `baseUrl`

[Roman Dodin]

Hi all,
I've been serving hubble-ui under a baseUrl <domain>/baseUrl by setting the following in the chart values:

hubble:
  enabled: true
  relay:
    enabled: true
  ui:
    enabled: true
    baseUrl: "/hubble/"
    frontend:
      image:
        tag: "v0.12.3"
    backend:
      image:
        tag: "v0.12.3"

When switching to v0.13.0 tag for the FE and BE components the web app errors with

"Unexpected application error. 404 Not Found"

Latest working version for me is 0.12.3

[Alexander Berger]

Looks like a duplicate of #889

[Artem Vetrov]

Hubble UI via Rancher Proxy also broken since 0.13.0
But I'm not sure if this issue is related since on 0.12.3 it works fine without altering hubble.ui.baseUrl.

0.12.3:

0.13.0:

Values:

# /var/lib/rancher/rke2/server/manifests/rke2-cilium-config.yaml
---
apiVersion: helm.cattle.io/v1
kind: HelmChartConfig
metadata:
  name: rke2-cilium
  namespace: kube-system
spec:
  valuesContent: |-
    kubeProxyReplacement: true
    k8sServiceHost: lb-internal-ip
    k8sServicePort: 6443
    hubble:
      enabled: true
      relay:
        enabled: true
      ui:
        enabled: true
        frontend:
          image:
            tag: "v0.12.3"
        backend:
          image:
            tag: "v0.12.3"

[Alexander Berger]

Maybe this is related to cilium/cilium#29563?