The book information that pops up when the mouse hovers is far too invasive in A19. The info window pops up when I hover the mouse over all the circled areas, including the acroll arrows and the +/_ buttons for adding Tags. It also pops-up in the white space of the book listing. This pop-up should be limited to only the book cover on the Left side and then when the Information Pane is open, the pop-up should be disabled completely since obviously that information is visible and the pop0up is superfluous.
Blessings