may well be theme/plugin related, can you give a specific example please
I’m using WP Astra as my theme and the plugin Sidebar Manager (also from Brainstorm Force), which just replaces the theme’s main sidebar with a different one based on the post type being displayed. Inside of the sidebar is a widget and inside of the widget, there are the shortcodes that aren’t being rendered. Let me know what other specific details I might be able to offer that would help. Thanks.
suspect that as bbpress has custom post types, your sidebar manager is responsible
so standard testing advice is
it could be a theme or plugin issue
As a test switch to a default theme such as twentytwenty, and see if this fixes.
If that doesn’t work, also deactivate all plugins apart from bbpress and see if this fixes. if it does, re-enable one at a time to see which is causing the error.
If you cannot do this to your site (say because it is live) then use the ‘troubleshooting’ features of this plugin to let you test without affecting other users
Health Check & Troubleshooting
Then come back