The search box at https://www.wikipedia.org shows a Wikidata description and page image but if an article doesn't have this then one from an earlier search result is copied instead of showing nothing. See screenshot made in Firefox 52.0.1 (32-bit).
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Description
Event Timeline
Restricted Application added a project: Discovery-ARCHIVED. · View Herald TranscriptMar 25 2017, 10:34 PM2017-03-25 22:34:31 (UTC+0)
• Deskana closed this task as a duplicate of T160749: Duplicate page image and wikidata description when searching on portal.Mar 27 2017, 9:26 AM2017-03-27 09:26:36 (UTC+0)