This appears to be the same issue reported in #14232.

When lineHeight is added to multiline TextInput's the height of the TextInput is initially effected however this disappears on first input at which point this appears to be ignored.

import * as React from 'react';
import { View, TextInput } from 'react-native';

export default class App extends React.Component {
  render() {
    return (
      <View>
        <TextInput
          multiline
          style={{
            margin: 30,
            lineHeight: 100,
            borderColor: 'black',
            borderWidth: 1,
          }}
        />
      </View>
    );
  }
}

React Native version:
expo SDK 33.0 => RN 0.59.8

Steps To Reproduce

1.Render TextInput with multiline=true and style={ lineHeight: <Number> }

Describe what you expected to happen:
lineHeight should be applied to TextInput contents effectively allowing space to be applied between lines of text.

Snack, code example, or link to a repository:
https://snack.expo.io/@njdancer/b91e88