WebView ‘Send message’ button is not clickable

[tbergman]

Reproducing :
RNTester -> WebView -> Messaging Text Example:
The ‘Send message’ buttons are not clickable, both in the WebView side and in the React Native side.
The cause might be the value of the pointer-events prop whose value is ‘unset’ in the
‘ui-child-container-view’ components.
Changing the pointer-events prop value to ‘auto’ in the iframe parent component (‘ui-child-container-view’ ) makes the button in the WebView side clickable.

[tbergman]

Further info: reproduced in Chrome 69 / OS X