Incorrect system color on popover view, and does not update while switching dark mode on iOS 26 beta 3

All system colors are displayed incorrectly on the popover view.

Those are the same views present as a popover in light and dark mode.

And those are the same views present as modal.

And there is also a problem that when the popover is presented, switching to dark/light mode will not change the appearance. That affected all system apps.

The following screenshot is already in dark mode.

All those problem are occured on iOS 26 beta 3.