The only trouble is that private fields are currently not supported by Firefox (see Mozilla Docs for private fields).
So here are my options:
- Use the private field and explain on the ticket that the UI version of the game is not usable in Firefox.
- Remove the private field and describe on the ticket that a certain attribute is out-of-bounds. (I'd also need to manually check answers for it's use).
So what's the right answer in this situation? Restrict the field manually or programmatically?