Here is what happens sometimes. Click on the presidents book, then click on George Washington, then click menu button back to list of presidents. For some reason, sometimes the list looks cut off until you move the scrollbar which refreshes the pane and it’s fine again.
I do see the text getting cut off, and my only guess is that sometimes dynamic text doesn’t ‘play’ well with masks and/or scroll panes. My first thing to try would be to embed fonts on the dynamic text fields. If that’s not it, you may need to post your source.