See discussion here https://community.logos.com/forums/p/119078/786042.aspx#786042 and more recently here https://community.logos.com/forums/p/186204/1074821.aspx#1074821
In summary the +/- tool tip that appears to note morphologic alternatives for some Greek and Hebrew words fails to show the information on hover for Mac platform this bug has been allowed to go unchecked since at least 2015. Would you please put in a fix?