Cannot search by issue reference in GraphQL

The vue_issues_list feature flag for the group/project issues list refactor (#322755 (closed)) was recently enabled on production.

In #323743 (comment 846880624), a customer describes no longer being able to search by issue reference.

On the Haml page, it looks like we can search for #33 to filter the list to show issue #33.

The Vue page uses GraphQL, and it looks like searching for #33 returns no results:

{
  project(fullPath:"h5bp/html5-boilerplate"){
    issues(search:"#33"){
      nodes{
        id
        title
      }
    }
  }
}

Should the GraphQL result include issue #33?

Screenshots

Before on the Haml page	After on the Vue page