Is it possible to show errors from actions in lock.js?

We are stuck with lock.js universal login, because Auth0 is not supporting passwordless in the new universal login (yet).

But we would like to use the new Actions extensibility features.

I’m for example testing out a “Pre User Registration flow”:

When this action runs, it get’s this response in locks.js (to try out an example of preventing sign-ups):

{"error":"extensibility_error","error_description":"You are not allowed to sign up"}

But lock.js only shows this:

Screen Shot 2021-04-07 at 13.54.57

Would it be possible to the error message from the action here - somehow?