TSC filters not formatting special characters like ", +" properly #829

Tableau Server Version: 2020.1.7 (20201.20.0721.1350)

    server.version = '3.7'
    server.add_http_options({'verify': False})
    urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

I know that this has been brought up and was fixed in #686 and so I've been trying to figure out how to properly handle the passing special characters to TSC. However, I am unable to get it to function properly.

I have a Tableau filter with company name where it may be formatted as "Company, Inc" or "A&B Consulting". I've tried literal transformations of the special characters using str.replace(',', '%2C') but it comes through literally to the filter.

So the page will return with None everywhere and name was applied as "Company%2C%20Inc".

I've tried both hard coding it and using
filter_df['Global Organization Name'] = urllib.parse.quote(filter_df['Global Organization Name']) but neither fix the issue. It is still passed literally.

Here is my code of filter application (I have a dictionary of filters and values)

   # If a filter is a string, replace the semi-colon. Else pass the integer value.
   for k, v in filters.items():
        if all(isinstance(n, str) for n in v):
            op_str = ";".join(v)
            op_str = op_str.replace(';', ',')
            options.vf(k, op_str)
        else:
            options.vf(k, v[0])

    # Populate the views.
    for view in view_list:
        print(f'Exporting {view.name}...\n')
        destination = join(tempdir, view.name + '.pdf')
        server.views.populate_pdf(view, options)

I have been looking through the request options code but am unable to figure out what's going on.