ArgoCD failing to template complex variable map of lists in get function - part 2

[igoratencompass]

Checklist:

• [ x] I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• [ x] I've included steps to reproduce the bug.
• [ x] I've pasted the output of argocd version.

Describe the bug

On the back of the previous issue #22538, now I get null for the get function variable. I have pass by the ArgoCD template complaining about incorrect var type for:

myOptions:
  option-1:
    - mypath/some-hash-1
    - mypath/some-hash-2
  option-2:
    - mypath/some-hash-3
    - mypath/some-hash-4

like so:

{{- $options := get (toYaml .Values.myOptions | fromYaml) (toString .Values.option) }}

but now I get null value for $options rendered by ArgoCD when .Values.option=option-1 here:

  something:
    options: {{ $options }}  <===== this shows as null

even if I hard code the option like so in the code:

{{- $options := get (toYaml .Values.myOptions | fromYaml) "option-1" }}

To Reproduce

I can't reproduce this locally, helm template . --debug --set option=option-1 executes just fine with or without the toYaml/fromYaml/toString gymnastics. Any idea what might be the problem? Why would something template differently in ArgoCD from local execution of helm template?

Expected behavior

ArgoCD helm template should not fail parsing the var and not return null/nil instead of list of values.

Version

v2.13.4+102853d