Ontextchanged is not fired in mobile device.

Ontextchanged is not fired in mobile device.

Both iOS and Android.

1) Create a widget with textbox
2) Wire Printstring note to Ontextchanged event of the textbox
3) Create widget and add to viewport in the level blueprint
4) Run in android device, try input any text in the textbox.

Expected: Hello will be seen in the debug message
Result: nothing happened.