Hiya, what is happening in this example is the following:
- When you initially search with your browser URL bar, the full search terms are sent to our server.
- We forward your terms to the upstream search engines that we use
- None of them return any results
However, when we are rendering the search page, it uses a different piece of code that truncates your search terms to the first 32 words or 1024 characters (whichever comes first, basically). If you scroll to the end of the rendered input, you can see this, it stops here:

So if you resubmit the search in this state from the search input on our page, a shorter query gets sent, and this one does produce (two) results - the one from your screenshot, and now this thread 😃 But with verbatim on, the second one gets culled.
Fundamentally there is a mismatch between NT and our old code at play here: Essentially all of the upstream search engines that we use cannot handle a query this long, so normally we truncate it as I described, and give you a little notice that this has occurred for transparency:

... but this is not behavior that we have ported to NT yet.
The error code that is displayed in NT is somewhat related; TLDR we are forming an invalid request to one of the sources that we use with this specific query, likely in how we "compile" your search terms into compatible requests for each engine, but it's rather moot as it is also too long and would be rejected anyways for being too long.
So, to summarize:
- Your query is too long for any of the APIs we use to handle
- The code that would normally truncate your query BEFORE the search is actually performed (and let you know about this) hasn't been ported to NT yet
- Retrying from the loaded SERP page appears to "work" because our frontend code is truncating it, so you are only submitting a small portion of your original search terms - one that is short enough for our upstreams, giving you a result.
We will prioritize closing this compatibility gap so that things are consistent and less confusing; thanks for the excellent report, and your patience!