You shouldn't be getting Lisle's section during the Arland people section if you are marrying him at all - his section should be later, with yours.
I took a look and I can't see why it wouldn't be skipping that part if you are on the political marriage with him route or his path - did you get the section later where you married to Wellin and became crown princess?
edit: Nevermind, I found what is probably the issue, thanks! <3