Notification Summary list is empty since upgrade to Android 17

I have a Pixel 10 Pro and recently upgraded to Android 17. I find the notification summary feature to be the single most useful feature of Niagara Launcher and it has been completely broken since this update. Notifications are still suppressed as expected. However, the “Show Summary” button only shows an empty list when I click it. If I disable the Notification Summary feature, all the suppressed notifications are successfully un-suppressed.

NB: I have put “don't know” in the Android version drop-down because 17 is not an option.