It’s unrelated to the bug from yesterday and is by design.
Queries composed of search operators can lead to confusion and a poor user experience (e.g., negation) so we fall back to a simplified title whenever they’re detected.
As with any design choice, there are always down-sides, like in your use-case where use of a simple OR expression still reads nicely. Unfortunately, it’s difficult for code to tell the difference, so we err on the side of using the fall back whenever the query uses operators.
