That appeared as soon as I typed the first character into the filter input field.

Confirmed it happens with pretty much any data. I cleared Portal's history, tap>'d a small hash map, then tried to filter it. Weird, now it works again.

It seems that, once it breaks, you can't easily get the Portal window back into a state where it will work again -- but after clearing and eval'ing a few things it started working again for small data, but still fails for the large, nested data structure. @U1G869VNV any hints & tips to help me debug this a bit further, or is the above error enough for you to go on?

I think filtering isn't causing the viewer selection to update for a given value, so the deref viewer is trying to deref the :not-found keyword :thinking_face:

I'll look into this issue when I get some time 👍

https://github.com/djblue/portal/commit/4d560cfa2af92ef62fb2623dfe482612907ee241 should fix this issue 💯

Thanks. When there's a new release, I'll test it out (I don't use filter much).