Power BI only creates selectors (IDs to handle interactivity between visuals) for the rows it sends. For successful interactivity, a visual would have to assign a suitable selector to a custom data point that Power BI could understand in the context of the data it originally sent (as a custom visual cannot directly communicate with other visuals on the page; just ask Power BI to try to filter them based on one or many IDs identifiable from the received dataset).
Based on this premise, it is highly likely that Power BI wouldn't know what to do, unless the logic in the visual tries to assign or accumulate selectors based on the original source data. As Profitbase is a closed-source visual, it's not possible to tell what they do here without asking them directly.
Your best bet would be to use Profitbase's official support link on their AppSource listing (which links to a GitHub repo where users can raise issues for bugs or discussions for feature requests) and ask them your question.
