Steps to reproduce the issue

Factory::getApplication()->input

contains the [layout] with value 'blog' even for an article, and not just for a category.

That is weird, because [layout] = 'blog' is a category parameter, not an article parameter.

The layout parameter should only appear in the Factory::getApplication()->input if a custom layout is set as an article level (with a dedicated menu item for that article layout). It should not be inherited from the category layout value, it makes no sense.

Expected result

When view=article, Factory::getApplication()->input should not inherit the [layout] variable from the category parameters.

Actual result

But currently the [layout] variable is inherited in the article view from the category parameters.

System information (as much as possible)

Joomla 4.3.2