Bash(jtk issues update MON-4231 --field customfield_10035=2)                                                       
  ⎿  ✓ Updated issue MON-4231                      
                                                                                                                     
⏺ Bash(jtk issues update MON-4231 --field assignee=null)                                                           
  ⎿  Error: Exit code 1                                                                                              
     updating issue MON-4231: bad request: assignee: Specify a valid value for assignee                              
                                                                                                                     
⏺ Bash(jtk issues update MON-4231 --no-assignee 2>&1 || jtk issues update MON-4231 --field 'assignee=""' 2>&1)       
  ⎿  Error: Exit code 1                                                                                              
     unknown flag: --no-assignee                                                                                     
     updating issue MON-4231: bad request: assignee: Specify a valid value for assignee                              
                                                                                                                     
⏺ Bash(jtk issues update MON-4231 --assignee "null" 2>&1)                                                            
  ⎿  Error: Exit code 1                                            
     updating issue MON-4231: bad request: assignee: Specify a valid value for assignee                              
                                                                                                                   
⏺ Bash(curl -s -X PUT \                                                                                              
        -H "Authorization: Basic $(echo -n "$JIRA_EMAIL:$JIRA_API_TOKEN" | base64)" \…)                              
  ⎿  {                                                                                                               
       "errorMessages": [                                                                                            
         "Issue does not exist or you do not have permission to see it."                                             
     … +3 lines (ctrl+o to expand) 

⏺ Yes, jtk doesn't support setting assignee to null/empty — every variation I tried (--field assignee=null,          
  --assignee "null", --field 'assignee=""', --no-assignee) failed with "Specify a valid value for assignee."
                                                                                                                     
  So I fell back to a direct Jira REST API call:   
                                                                                                                     
  curl -s -X PUT \                                                             
    -H "Authorization: Basic $(echo -n "rian@monitapp.io:$JIRA_API_TOKEN" | base64)" \
    -H "Content-Type: application/json" \          
    -d '{"fields":{"assignee":null}}' \       
    "https://monitproduct.atlassian.net/rest/api/3/issue/MON-4231"             
                                               
  The Jira REST API accepts null for assignee natively — it's a jtk CLI limitation. Worth noting: my first curl
  attempt also failed because JIRA_EMAIL wasn't set as an env var (it's only in the jtk config file), so I had to
  hardcode the email from jtk config show.