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# Context
We currently have a tracked value of `topic` in the header service that we utilize across the app for determining the presence of a topic.
A simple example is: If you are in a topic, and scroll down the page, we need to communicate to the header that a topic is present and we change the styling of the header.
The issue with this logic is that when entering a topic (and you are at the top of the page), we **haven't** set the topic on the header service yet. We only set the topic when you have scrolled down on the page (set by `app/components/discourse-topic.js`)
This is unhelpful behavior when you are utilizing a plugin outlet that is receiving the `topic` from the header:
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