Text Find/Change seems to have a bug: let's suppose we have 2 paragraph styles, for example a title style and a body text style. In the document I received from our partner sometimes the body paragraphs wear the title style and they were manually overridden to look like the body style. To fix this error I tried to search for texts that has the title style but the font used is that of the body style. Indesign Finds something at the beginning of the body paragraph (a thin cursor-like thing can be seen there: it is the selected something) that is - as Indesign states - of the title style. But as you can see on the screenshot it is definitely not of the title style.

In grep Find/Change the problem doesn't exist.