Yeah, check lists in Notes could really use some improvement for sure. Honestly, just now looking through the Github for the Android Nextcloud Notes app it looks like there’s a good deal of technical debt that has been stacking up over time from trying to bring more modern features to what started as a minimal text-only notes app.

There is a way to enable “grid view” in the app settings for the more post-it view that shows the first part of the contents, but doesn’t seem to show on notes with markdown formatting, so anything with a list doesn’t show a preview.