Is your tooltip going off the page of your Power BI report? Maybe it looks weird on an iPad or smaller device. Adam shows how the new tooltip auto-scale feature can help.

April 2023 Update reference
https://powerbi.microsoft.com/blog/power-bi-april-2023-feature-summary/#post-23001-_Toc1599845071

Documentation:
https://learn.microsoft.com/power-bi/create-reports/desktop-custom-tooltips?tabs=powerbi-desktop#allow-tooltips-to-auto-scale-preview