progress-bar not rendering properly

[Rob Johnson]

Hi all, 

Anyone come across problems with the internal rendering of the progress-bar, e.g,

load this page: https://getbootstrap.com/docs/4.1/components/progress/

Only one of the progress bars in this examples renders correctly.

This is my python:

config = pdfkit.configuration(wkhtmltopdf="C:\\Program Files\\wkhtmltopdf\\bin\\wkhtmltopdf.exe")

pdf = pdfkit.from_url('https://getbootstrap.com/docs/4.1/components/progress/','out.pdf',configuration=config)