I found a release with a single release event, which has a country but no date. I decided to look up the date and add it. When it came to the edit summary page, the date was shown as added, but the corresponding release country was not shown.

This seems to be no change for the previous behaviour, before multiple release events were introduced in the schema change. However, if multiple countries are missing dates on a release, and an editor decides to add dates, this edit summary could be confusing.

The issue may also apply to edits displayed in voting queues, making it more difficult to vote on edits.

To fix, the release country in the country-date pair should probably be shown.