There are a number of eBooks in my library. I understand their limitations in Logos. I have been able to at least search the contents of the eBook for locations of words, etc. But, I just purchased an eBook and it does not appear searchable. This is an example of one of many search attempts. Notice the search word is placed in view in the panel just to see what would happen. But no results on any of the attempted searches.

But if the same book is opened with Logos online app, notice the difference.....

Is this normal or is it a hickup in the Logos Desktop?
eBooks are published in EPUB format, so any application that can read EPUB format should be able to read the eBook. Where does Logos store it library on a PC? If Logos Desktop doesn't work with this book, I would think using another EPUB based application would be able to search it, or not?
Please advise.