Redmine

If you search for a number in the search box it takes you directly to the issue id if there is an issue id for that number.

It should take you to a results page if there are search results that match that number

I've created the scenario on the demo site
http://demo.redmine.org/projects/search-issue/issues

The first issue is created and the issue id is 80815
The second issue is created and subject is set to 'Subject contains 80815'

Using the search box if you enter in 80815 it will take you directly to Issue 80815 instead of showing a results page for both issues.

I know that you can wrap the text in the search box with quotes such as "80815" which will then bring up a search results page with only the second issue, but should it not also contain the first issue in those results?

I'm also not sure why you should even have to wrap the search text in quotes to get it to search for text anyways.

I'm not sure what version the demo site is, but here is the info page from our Redmine instance

Environment:
  Redmine version                2.6.1.stable
  Ruby version                   2.0.0-p451 (2014-02-24) [x86_64-linux]
  Rails version                  3.2.21
  Environment                    production
  Database adapter               PostgreSQL
SCM:
  Git                            1.9.1
  Filesystem                     
Redmine plugins:
  redmine_dmsf                   1.4.8 stable

Let me know if I'm doing something wrong or if more information is needed