Rmarkdown - Duplicated TOC (Table of content)

问题

Hello StackOverflow community,

When creating an Rmarkdown document all goes fine and table of content appears as intended. TOC Correct

When I open the HTML in my browser from Rstudio to my browser it does as well appear correctly.

The issue happens when I save that HTML and open it later on or send it to somebody, the TOC would then appear duplicated.

TOC with duplicated items

Below is the code used regarding the toc in my .rmd file.

  output: 
  html_document:
    toc: true
    toc_float : true

Would you know what I am doing wrong or might be missing. Thanks in advance for any feedback!

来源：https://stackoverflow.com/questions/54653271/rmarkdown-duplicated-toc-table-of-content