Mongodb-client-encryption crashes using Node 14

I have a problem using mongodb-client-encryption with Node 14. Whenever I call ClientEncryption.createDataKey with local Storage, it crashes. It worked fine with Node 13.

I have opened a question in Stackoverflow. There is also a short codesnippet, how the behaviour can be reproduced.

Does anybody have the same problem and/or knows how to work around it?