I've noticed since upgrading to 12.2.4 that the library only opens as an overlay rather than a separate pane. This used to only happen if there were too many panes opened at the same time but now it is happening even with no panes open at all. It's as if the 'always show library as a popover' option is permanently switched on even when not ticked. Pressing shift makes no difference either. With the library open as an overlay there is no option to click the info button of a book before opening it, the button is not there. It also means that the library hides the pane underneath.