Can I change the file picker on Firefox 59 on Linux? I used to set "ui.allow_platform_file_picker=false", but this does not work anymore. Thanks. ------ I personally think the current file picker is fairly unintuitive. - If a sub directory is highlighted, then "Save" button opens the sub directory instead of saving the file on the current directory. In addition, it is not easy to unhighlight the sub directory. - To create a new directory, I need to 1) click on the [+] button, 2) enter the new directory name, 3) click on the file name, 4) press Enter. Step 3)---using mouse---is required.