I wanted to filter my library by "mytag:#ReadLater". I have distilled all of my custom tags so that only "#ReadLater" uses the "#" character. However, when I typed "mytag:#Read", I had a number of books show up in my library that did not include "#"; things like "Greek Reading Exercises" showed up. (By extension, typing "mytag:#" doesn't filter anything out at all.)
Is this expected behavior?