This issue is non-reproducible. Ensuring Power BI is on the latest version as well as ensuring the cache is cleared for Power BI Desktop (or in the web browser if using Power BI Online) is recommended.
Additionally, ArcGIS for Power BI (along with other visualizations in Power BI) has an upper limit of 30,000 points. When using datasets containing more than 30,000 points, unexpected behaviour can occur in the visualizations as large amounts of data is pushed through Power BI.