Steps to reproduce:

1. Enable screen reader
2. Navigate to any component triggering the tooltip on focus using Tab
3. Tooltip is not being read

Expected:

Tooltips should be read automatically by a screen reader when user moves focus to the trigger component using Tab.

ARIA tooltip role overview with working example:
https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/tooltip_role