I am still having this problem really really regularly on my 13” M1 iPad Pro and my 11” M4 iPad Pro with Magic Keyboard (which has the built in Magic Trackpad). It is trivial to reproduce, would a video help? Using the trackpad to select a story on the left just entirely kills my ability to change articles via the left panel, but the next/previous buttons on the right still work. I have to kill the app every time this happens, which is a bummer.