I'm having a problem with search in Explorer. According to the documentation, when you search a word it should look everywhere in names, titles, descriptions, comments, and content (Performing the search without a qualifier expands the search to include tags.)
In my case, it seems to search only in the title. Is it a configuration problem?
The behavior which you described is working in share search. But you are right for explorer it is searching inside title only. I am not sure if any configuration is to be done related to that. It is simply inconsistency between share and explorer.