I have just recently upgraded my website with the latest Bootstrap Version (from v4 to v5) and I use selectPDF to convert a page into a PDF. However, I noticed that the PDF is now not rendered correctly (The table border that uses Bootstrap Class is missing). I used SelectPDF version 18.4 before and currently use the latest version of SelectPDF (version 24), but it still does not work.

This is the Dropbox link to the HTML source and the PDF result: Link

The relevant C# Code is pretty straightforward. I also use PdfSecurityManager, but I don’t think it is relevant for this question

HtmlToPdf converter = new HtmlToPdf();
string html = "the HTML content"; //the content can be found on the link above.
PdfDocument doc = converter.ConvertHtmlString(html);

How do I resolve this?