Reports and error events have a new Context tab with the data your app attached with setContext() or captureException(), one key per row. BugDump already stored this data and the task search already matched it, but no page in the dashboard showed it, so a search could find a report without showing you why.
An error caught by BugdumpErrorBoundary from @bugdump/react carries React's component stack there, so you can see which component threw and the components above it. When the task search matches something in it, the Context tab is marked.