Actually, maybe it is a problem. I'm finding some CD TOCs that I've submitted that Picard can query and that Ripper R17 cannot. And these are discs that return a single result.
Here's one and I'll edit this note with links to others as I find them. I've disabled local cache on Ripper and am also manually refreshing so that all data sources are queried.
https://ibb.co/f1LTcq9