Kibana version: 7.8.1

Elasticsearch version: 7.8.1

Server OS version: Ubuntu 20.04 LTS

Browser version: Google Chrome 84.0.4147.125

Browser OS version: Windows 10 2004 Enterprise

Original install method (e.g. download page, yum, from source, etc.): Debian repository

Describe the bug: TSVB shows more than one date even when specifically stating you only want the top 1 record

Steps to reproduce:

1. Create Markdown TSVB
2. Select any field of type: "date"
3. Aggregation: Count
4. Group By: Terms
5. By: your.date.field
6. Top: 1
7. View the Markdown visualization showing a large array of dates instead of the specified "1"

Expected behavior: Should only show 1 date

Screenshots (if relevant): https://discuss.elastic.co/t/tsvb-markdown-dates/215916

Errors in browser console (if relevant): None

Provide logs and/or server output (if relevant): Not relevant

Any additional context: This was brought up back in January by Mack_rogers, and there was a suggestion to file a bug report. There is no indication as to whether it was reported or not, and the thread is now closed:

https://discuss.elastic.co/t/tsvb-markdown-dates/215916