Custom keyboard slides *behind* modal

[gitasong]

We're trying to integrate the custom keyboard with a modal component using the package react-native-modal@2.4.0, which uses React Native's original modal under the hood. While the standard Android keyboards have no problem displaying over the modal, the custom keyboard raises behind the modal, even though it's registered as an Android keyboard. We've tried all sorts of solutions, including react-gateway, but haven't gotten anything to work. (None of us are Java devs.) Is there a fix for this?

[laurentS]

I posted a question on stackoverflow, hoping to get some help there https://stackoverflow.com/questions/49981373/react-native-modal-dialog-hides-custom-keyboard