In the Mac version, I have lost some rather basic functionality that existed previously. I am running Mac version 10.14.6 and this is in reference to the latest update available from Logos, 8.8.0.0039. If you have identified 20 or so books, you used to be able to tab right or left using an arrow in the back at the far left or right of the window. That functionality is gone. I have over 30 volumes that I have been using for a study and now I can only see 11 of them and do not have the ability to tab to the left or the right to get to the others. This problem exists in the Bibles I have open as well as other resources as well. I am now totally dead in the water unable to finish my work or make the time frame for the service. If you have not updated yet, do not do so until this is fixed as it is, for me, a rather severe issue