Cannot highlight text in my InDesign document past page 80

I have an 80-page document that I have been working on for the past couple of months. This week I was instructed to add a new section. I added the new pages; then I added the text. Now that I need to format and edit my content, highlighting text does not show on screen. Oddly, this is only the case past page 80. It works fine on all other pages. I can click and drag or double-click to highlight, and it shows up just fine.

I am working on a Windows 11 system, and I have the most recent updates for InDesign.