Advanced Communities team has also released a new improved version of the Lightning Knowledge Component for Community.
To improve the performance of the Lightning Knowledge object, the new setting “Knowledge object API name” has been added.
The default name specified is “knowledge_kav”. If the API name for the lightning knowledge object in your organization differs from the default value, that may cause some unexpected issues.
To make sure the correct API name is set, go to the Classic Interface – Setup – Knowledge Object Setup.
Also, you now have more flexible categories’ filters. You can now define in the Properties box whether to show checkboxes next to the categories which should allow users to apply multiple categories within one category group.