I saw where this had been marked resolved in february, however it is still happening in July 0f 2019. Brave is adding a crazy long extension to google docs where no one else can read it and it is saving pdf files as html files, which totally ruins the pdf. The only workaround is to print the file.
Here is an example chrome-extension://oemmndcbldboiebfnladdacbdfmadadm/file:///C:/Users/const/Downloads/Invox-Whitepaper.pdf . why in the world is this crazy type of linknecessary???. I just want a normal pdf view and to be able to save and view it as normal. Especially when i share docs through google drive it gets really messy.
This link below marked it as fixed and closed it up .
https://community.brave.com/t/when-saving-pdfs-save-as-type-is-not-pdf/15161