Issue Summary

When using a custom field of type 'Select List (single choice)', it is not possible to use the != operator. Doing so results in a jqlTooComplex error.

Steps to Reproduce

1. Add a custom field of type 'Select List (single choice)' E.g Department
2. Add a single value option (see screenshot: Select List with one option) E.g DSI
3. Associate the new custom field with some screens.
4. In a project create an issue and select the DSI option from the Select List
5. In a project create a second issue and do not select any option from the Select List
6. In the issue navigator enter the following JQL

   Department != DSI
   

Expected Results

The JQL should return any issues where the value of the field is not equal to DSI

Actual Results

No results.

Checking the dev tools it can be seen that:

• QueryComponent!Jql.jspa returns an HTTP 400 response
  
• A preview of the response shows the jqlTooComplex error
  

Workaround

Formulate the JQL query with the inverse E.g

FROM:

Department != DSI

TO:

Department = ART OR Department IS EMPTY