Tapping a story tile doesn't show the content on iPad

Using NewsBlur v10.1.1 on an iPad Pro with Apple Keyboard case. For the last few weeks, tapping on the left-hand tile of a feed list doesn’t do anything. I’ve found that swiping sideways on the right-hand content pane makes the content show up, though.

In the past, tapping on a story title tile was intermittently ignored, but now it’s always ignored.

This feels like a bug, but any ideas on how to fix?

For no apparent reason, it starting working again. I have no idea why, but it seems reliable now.