What this check tells you
A search title must tell a reader what the page contains without relying on an arbitrary character-count target. Readability and specificity are stronger starting points than a perfect score.
Compare two real cases
Compare 'Best Tools Online' with 'Free PDF Page Organizer: Reorder and Remove Pages'. The second is more descriptive, though it may still be shortened on a narrow screen.
How to check your result
Write one plain-language title that clearly states the page's purpose. Compare it with a shorter alternative and review suggestions manually.
Do not mistake a signal for a guarantee
Google can generate a different title link from page content. A pixel-width preview is guidance, not a guarantee about search results.