I have exactly the same question as the below link, which went unanswered:
I used to use Rstudio for latex on a linux machine, but after switching to Mac, after extended effort I couldn't get Mac Preview to sync with the latex code, so I chose the Rstudio PDF viewer, but every single time I compile the latex code, it reloads the sidebar. It's unbelievably annoying and disruptive, since I'm used to compiling every 20 seconds or so to avoid developing hard-to-find errors or bugs.
Loading the sidebar shrinks my pdf to a size where I can't read the text, so I have to navigate to the toggle sidebar button and shrink the sidebar every single time I compile my latex. Please can someone help me to disable the sidebar from reloading?