How can I scroll down to read the full item descriptions?

I'm playing Doom on PC. When I read stuff in the in-game log, I can tell that there's more text, but I can't seem to actually scroll down to read it. The mouse scroll wheel doesn't work, clicking and dragging doesn't work, clicking on the scrollbar doesn't work, and mashing the keyboard hasn't worked.

I've discovered that if I plug in my gamepad, I can use the stick on that to scroll down. Is there any way to do this without plugging a gamepad in?