A11y: Badge font-scaling handling doesn't work on iOS

[meatnordrink]

Current behaviour

The Badge component attemtps to account for font-scaling in badge text by adjusting line-height. This works (at least at font-scales <= 1.5, the max we allow on our app) on Android well, but not at all on iOS.

Expected behaviour

Ideally the badge number would be visible on both Android and iOS.

How to reproduce?

      <Badge
        >
        {notificationsUnread.length}
      </Badge>

Then, on iOS, under Accessibility -> Allow Large Fonts -> Font Scale, set it to large (>= 1.5).

Preview

Android:

iOS:

What have you tried so far?

Tried adjusting fontSize, height, width, etc. by fontScale, which is already available in the component, which did not help; tried adjusting the line height (removing the / font scale), which got closer; tried passing a <Text> child with allowFontScaling={false}, which, again, got closer.

Your Environment

software	version
ios	latest
android	x
react-native	0.73.6
react-native-paper	5.12.3
node	x.x.x
npm or yarn	x.x.x
expo sdk	x.x.x

[dpuckett]

Is there any movement on this? It's becoming an issue for anyone wanting to provide accessibility in ios