Can't get key/value from hash

The doc states

"When iterating a hash, item[0] contains the key, and item[1] contains the value"
https://github.com/Shopify/liquid/wiki/Liquid-for-Designers

But i'm getting blanks.
I'm testing here:
https://pramodvalavala-msft.github.io/liquid-playground/

Template:

  {
  {%- for item in answers -%}
    {%- assign oSubAnswers = item.answer -%}
    {{oSubAnswers}}
    {%- for subAns in oSubAnswers -%}
      {{ subAns[0] }}: {{ subAns[1] }}
    {%- endfor -%}

  {%- endfor -%}
  }

Data:

{
    "answers": {
      "12": {
        "answer": {
          "field_1": "John",
          "field_3": "White",
          "field_5": 1111111,
          "field_4": "111-111-1111"
        }
      },
      "22": {
        "answer": {
          "field_2": "111 Ventura Blvd",
          "field_3": "111-111-1111",
          "field_8": "johnawhite@gmail.com",
          "field_7": "https://tort.xyz",
          "field_6": "10 am to 6 pm, M-F"
        }
     }
   }
}

Output:

  {
    [field_1, John][field_3, White][field_5, 1111111][field_4, 111-111-1111][itemName, answer]
      : 
      : 
      : 
      : 
      : 

    [field_2, 111 Ventura Blvd][field_3, 111-111-1111][field_8, johnawhite@gmail.com][field_7, https://tort.xyz][field_6, 10 am to 6 pm, M-F][itemName, answer]
      : 
      : 
      : 
      : 
      : 
      : 

  }

Start by reproducing the template and data in the linked Liquid Playground, then compare the observed iteration behavior with the Liquid for Designers wiki statement. Determine whether the implementation or documentation is inconsistent, and consider the issue done when key/value access is either corrected or clearly documented for this input.