The Owner last read date sorting option doesn't work with the Currently Reading tab.

I assume this sorting method looks for the last Finished reading entry in the Reading Journal since books I have already finished, and I am re-reading, are the only ones to appear with this sorting option.
This method works fine in the Read tab, since all books in this tab have already been Finished reading, but it doesn't work in the Currently Reading tab, where most (when not all) books have never been Finished before.
As a result, you have almost all books in the Currently Reading tab hidden when you set the sorting to Owner last read date.

I suggest that the Reading Journal's Updated progress also be accounted for in the sorting, so that "last read date" means "the last time you pick up the book to read" and not "the last time you finished the book".