Just reporting problem at this time. Do not need an immediate resolution.
Problem Found: Tooltip text for command bar items (i.e. possibly in other tooltips outside of command bar) does not scale with the DPI setting along with the rest of the form. Tooltip text always appears only at 100% DPI font size and not higher.
Please note: I tested this by using two monitors set to 1) 1920x1080 at 100% scaling and 2) 3840x2160 at 200% scaling and dragging the application back and forth between the two monitors.