This is a strange and annoying (for the mind filled with grace) bug, please fix it soon.
I have a macbook pro retina 13, and use Logos 6.
Try this and you will find what the problem is.
I even uninstalled everything (first time, app only, second time, with all data... since I upgraded from logos 4, folder name Logos4 of application support removed...) and reinstall, but still persists.
1. search a passage like Matt 11:1 by typing it in the search box and enter in passage guide.
2. wait and select a commentary, and read it with scrolling.
3. switch active program to anything else, like chrome or word...
4. switch back to Logos 6, and click the search box of the passage guide and hit 'delete' key... now, Logos 6 is hang... no response (text is not deleted at all with 'delete' key, it doesn't show any difference.. )
5. if I click in the middle of the text in the search box, then this 'hang' mode is released, but very inconvinient. If I don't do this and switch back to another program, then the logos 6 won't show even I switch again back to logos and won't quit even I chose quit by right click on logos 6 icon in the dock or even in activity monitor...
Sungil