Getting my walker class to output term posts using wp_list_categories();

Hi all,

I have written this code and I am confused at the outcome:

https://pastebin.com/kwjM3BX7

When run, it outputs:

Product categories
  Chairs
    Metal
      Metal chair
    Wooden
      Wooden chair
    Wooden chair
  Tables
    Wooden
      Wooden table
    Wooden table

It is suppose to output the product_category taxonomy terms:

“Chairs” with its children:
“Metal” and “Wooden”

and

“Tables” with its children:
“Wooden”

Then for each sub term, it should output the posts that belong to it:

Wooden chair
Metal chair
Wooden table

But instead it cycles through the posts:

“Wooden chair” for example

and then ends the ul and then does Wooden chair as if it’s a term when infact its just a post.

Any ideas?

[ Please be patient and do not bump. That’s not permitted here. ]