URL:
* http://intense.wmflabs.org/development/index.php?title=Z:sharelatex--member_of_group_subscription/fi&diff=36886&oldid=17604
* http://intense.wmflabs.org/development/index.php?title=Z:sharelatex--member_of_group_subscription/fi&action=history
```
MariaDB [intense]> select rev_id, rev_timestamp, rev_len, rev_parent_id, rev_sha1, rev_content_model, rev_content_format from revision where rev_page = 17584;
+--------+----------------+---------+---------------+---------------------------------+-------------------+--------------------+
| rev_id | rev_timestamp | rev_len | rev_parent_id | rev_sha1 | rev_content_model | rev_content_format |
+--------+----------------+---------+---------------+---------------------------------+-------------------+--------------------+
| 17604 | 20150104125532 | 107 | 0 | dmflmumti82h6wejvf4hqpuowydw26y | NULL | NULL |
| 36886 | 20150118211111 | 107 | 17604 | dmflmumti82h6wejvf4hqpuowydw26y | wikitext | text/x-wiki |
+--------+----------------+---------+---------------+---------------------------------+-------------------+--------------------+
2 rows in set (0.00 sec)
```
Expected: only one revision in history.
MediaWiki 1.25alpha, ada66e75f35ac7391e5e2fb0534a0996fef5166c