All Arcade expression results not included as symbol classes in new Map Viewer

[HollyTorpey_LSA]

Hi all,

I have a very simple Arcade expression that is being used to create symbol categories based on two fields, ObservationType and LiveAnimal:

When tested, the result is as expected.

However, when I use the expression to symbolize my points, I get this: 

Even the test expression from the Expression window ("Other sign") doesn't show up. They're all lumped together into a single " sign" category.

Does anyone have any idea what's going wrong?

Thanks!

[KenBuja · Accepted solution]

I see this happening in a test I run using my data with domains. Can you use

} else return $feature.ObservationType + " sign";

instead of using DomainName?

[HollyTorpey_LSA]

@KenBuja You're right! That did it. Thank you!!

Weird, though. 

[KenBuja]

I would recommend that you open a bug incident about this with Esri