Searching on published site

First, I’m not talking about the search function available on the published site, but rather when I search using the browser search function.
My problem is that when I try to search text on the site, the behaviour is flaky, the number of search results varying, and often cannot find text if it’s not actually showing on the screen. This would be a key function for what I’m doing. Am I doing something wrong? Or should I put in a bug report?
Thanks for any insight…

we will fix this

An exquisitely concise bright spot in my day!