On my 10.5 Pro, I get a person’s first and second name in the message list. On my 12.9 I dont even get a person’s full first name if it’s long, like Rosemary, I’ll just get Rosema and I don’t get any second names.
when I press the dividing line a dark bar appears, you used to be able to drag this either way, but now it doesn’t do anything.