Redmine

If you have many issues with an identical created_on timestamp (e.g. 2014-05-14 01:00:00 pm) and all ticket subjects contain the same word (e.g. webservice), there's a bug in the search results.

Imagine there are 20 tickets with the word "webservice" in the subject and all tickets where created on 2014-05-14 01:00:00. Now search for "webservice" in that project. You will see that (at least) 20 issues have been found, the first 14 are displayed. If you switch to the second page, this page is empty, because the specified offset is based on the created_on value.