Starting from the Bridge release 18.0, certain function names had to be changed in the theme in order to meet the latest ThemeForest standards. Therefore, if you had a version of Bridge prior to the 18.0 release and you did some customization via the child theme, the said changes will no longer work after you have updated the theme to the latest version.
Fortunately, there is an easy fix for this issue – all it takes is to replace the function name prefixes from ‘qode’ to ‘bridge_qode’ in your child theme. E.g. the function name 'qode_is_native_font' should be changed to 'bridge_qode_is_native_font' in the child theme functions.php file in order for the modified function to work after the update.
There are also some variables and actions that had to be renamed starting from the Bridge 18.0 version. For example, the variable name $qode_options_proya has been changed to $bridge_qode_options. The action 'qode_header_meta' is now called 'bridge_qode_action_header_meta'.
Our advice is to compare the old version of the file with the new version of the functions.php file from the latest Bridge update – this way you’ll be able to see all the relevant changes that have been made. If there are only minor modifications in your child theme file, the safest way to go would be to use the new file version from the latest Bridge and make all necessary modifications in the code, instead of renaming functions or variables in the old file.