I just got my review copy from Ghostlight today and I haven't used Summon yet, but I will try it out later just to see if my copy has the bug as well (it probably has).
I have to say Ghostlight's PR guy Ross is a really nice guy. They were all out of copies he managed to snatch a copy somewhere a couple days later for me to review. People shouldn't call Ghostlight a bad company just because of these bugs (and the long wait, of course, which may or may not have been entirely in their hands). Yes, they are terrible bugs, but I haven't had any bugs in any other Ghostlight game I've played, so to say they're a bad company just because of some bugs in one game is a little bit of a bold statement.
If I happen to encounter bugs in my copy (which I probably will, since I already saw the Naoya bug in my game) I will reach out to them on tuesday to ask if they're planning on releasing a patch. It's the least they could do, especially with DS2 on the horizon. The name thing should be really easy to fix, but I'm not sure about the Summon bug, but the least they could do is deactivate the Summon-button. It would be a bad solution, but it would be better than getting booted out of your game everytime you select Summon.