The Template:Wikiproject Banner on Bengali Wikipedia is experiencing functionality issues that need to be resolved. This task involves identifying and fixing the problems affecting the template, such as incorrect parameter handling, formatting errors, or display issues.

The solution should ensure that the template works seamlessly for categorizing and managing WikiProject-related pages, providing clear and consistent outputs. Fixing this will improve the organization and usability of WikiProject banners, benefiting both contributors and project coordinators.