Scroll bar on my styles list has disappeared
The set-up: I have a 14" MacBook Pro running MacOS Monterey v12.2.1, and I've got Apple Pages v11.2.
The problem: In Apple Pages, I use a lot of different styles. Today, I went to apply a style to one of my paragraphs, and discovered that the pop-up list of styles is missing either a scroll bar or a down arrow at the bottom of the list to see the rest of the choices. I know there are more, and can even see 1/2 of the next style name, but cannot figure out how to access them.
The document I was in when I first ran into this is very large (350 pages), but I'm seeing the same thing in documents that are only a few pages long.
I recently noticed that I was missing my scroll bars, and went into System Preferences > General and chose "show scroll bars: Always". The scroll bars are showing up every other place I expect to see them, just not in the styles list. (???)
(I recently used Migration Assistant to move some of my files from my old iMac to my new MacBook Pro. I had already moved some things over before this; I'm not sure if that has any bearing on the problem.)
This is putting a real crimp in my style (no pun intended!). Does anyone have an idea on how to fix this?
TIA for any suggestions.
MacBook Pro 14″, macOS 12.2