Unusual Code box appearing on Route To Actions

Environment

Discourse Version: 2.9.0.beta12 (7be53b15)

Plugin Commit: 754a0c69

Steps to Reproduce

A picture tells 1000 words:

Screenshot 2022-11-16 12.11.54

Example

https://forum.hinz.org.nz

Private forum

Logs

image

@NathanK Could you PM me the wizard json?

Well, I could have except I hacked it in order to fix it and make it do what I want (i.e. enter something in the output field).

But the problem persists with the Code bit. Here is the .json:

Welcome New.json (12.8 KB)