The latest versions of the T4 plugin and T4 Blank Template Bs5 on Joomla 4/5 generate URLs for the favicon and custom font without a starting /.
Example: "images/favicon.ico" vs "/images/favicon.ico" and "templates/t4_bs5_blank/fonts/custom-font/custom-font.css" vs "/templates/t4_bs5_blank/fonts/custom-font/custom-font.css"
This causes an issue with locations beyond the base directory because they are relative URLs and the files don't exist in the relative subdirectory. Can you confirm if this is a bug with either the latest versions of the T4 plugin and/or T4 Blank Template Bs5?