Current State:

Currently, when opening the knowledge base article, its breadcrumb is displayed like "Help center" > "Portal" > "Article title".
If there is the topic in the help center and the user opens article from the topic, the breadcrumb is displayed as same way.

Proposed Future State:

Users would be confused about how they have been navigated to the article by the current breadcrumb.
If users navigated to the article from topic, it would be better if the breadcrumb is displayed like "Help center" > "Topic" > "Article title".