BUG: Can't find existing RL's

Inspired by Am I doing something wrong?

1) Used the Reading List find box to look for RL's on Luke, Matthew, Mark, John, Jean, Juan, Fall, Purgatory and Magnificat. All gave 0 results. And I know for a fact that several of them have RL's.

2) Removed the last letter in Luke and redid the search. Got this:

3) Removed the last letter in Matthew and Magnificat. Got what looked like the exact same list as above.

4) Removed two letters from Luke and searched for only Lu. Back to 0 results.

5) Whatever I start typing, I seem to get first 0, then the list above, then, when the word is complete, 0 again.

This seems very odd, to say the least.

(Still on 4.5b. Someone might want to check on the RC.)