Brief
We have modified the 'block_navigation.php' file for release 3.4.7.
 
Description.
Not a bug fixing but an update which adds support for language tags (e.g. [en]Thank you[/en][es]Gracias[/es][fr]Merci[/fr]) to Menu Title and Items' Names in Custom Menu block.
 
Solution.
We would recommend to download an updated version of the file from here: http://www.viart.com/downloads/block_navigation-3.4.7.zip
 
Further, extract the above mentioned file into the 'blocks' folder of your shop replacing an existing one. Don't forget to make a backup copy of the current file in case something goes wrong.