The L8 Mobile App v8.8.0 for iOS is forcing a Bible Range variable on all of my searches, if I attempt to search one of my collections on my iPhone. That effectively kills the usefulness of the search in most cases. Here's what happens:
1) I enter a search string, like "Martin Luther"
2) If I opt for "Entire Library" the search runs normally.
3) If I choose a specific collection to search, the Range field is displayed, forcing a Bible Range option, which I would expect for a Bible search, but when searching a collection, it eliminates the ability to get search results for anything other than scripture verses. For example, the app can't seem to find the phrase "Martin Luther" in the Pauline Epistles. Go figure. 
This behavior does *not* occur with v 8.7.1 on my iPad. Collection searches work as expected in 8.7.1.