Upgrade from 6.2.0 to 6.2.1 - Kunena menu Custom Content fails to display articles

[makitso]

Joomla 4.4, Kunena 6.2.1.
Have added several tabs to the Kunena Menu. Menu type is Custom content, with Main Setting pointing to article [article=full]75[/article].
This has worked fine until the latest Kunena upgrade to 6.2.1. Once updated the article does not display. There are no errors in the developers platform or logs.
Note: reloading libraries/kunena from the 6.2.0 version and the articles appear as expected

[makitso]

As a test, I created a new install, Joomla and kunena. I then created one article. I then added a sub menu to the Kunena menu. When I selected the forum menu tab nothing was displayed.

[makitso]

With kunena 6.2.0, the added kunena menu item worked correctly using the rules noted in https://docs.kunena.org/en/faq/rules-or-help-pages listed below:

Backend -> Menus -> Kunena Menu

• Click New
• Select Menu Item Type - Kunena Forum - Custom Content
• Menu Title - Rules
• Parent Item - Forum
• Click (tab) Main Settings
• Contents Format - BBCode **
• Enter the article ID number – [article=full]123[/article]
• Save & Close

The problem is that kunena 6.2.1 does not work with the [article=full]123[/article]

[rich20]

Confirmed.
Custom content works only with format HTML

• HTML
• Text
• BBCode

[rich20]

• Solved