Running into two different things that seem like bugs when using the News Gallery web part in a SharePoint Online Modern Communication Site:
Internet Explorer: Within IE, the News Gallery does not show the title of the article in the view, and also on first load it shows the correct URL for each article when scrolling but after a while it reverts to showing/opening a single article when any of the five are clicked.
Chrome: Chrome correctly shows the title, but has the same article selection bug.
For more detail on the selection bug, if I have 5 articles in the gallery, sometimes when scrolling through, it shows each article correctly (i.e. "Test Article 1" and "Test Article 2" will be visible and selectable) but then seems to break and the only "Test Article 1" is selectable even though I can scroll through all 5 and see article titles.
I have not seen anything from Microsoft on this, and not many user complaints, so maybe I'm doing something wrong on my end?