As mentioned in the title, today CMD+K rightly does this:
When attempting the same thing in-line, the search would rather have me create a new page instead:
It would be a lot more intuitive and helpful to suggest a match if the string being typed is found in any part of the titles (not just at the start) - this is consistent not just with the current Logseq behaviour in CMD+K, but also with the default behaviour of other tools, like Obsidian.