Issue Summary

This is reproducible on Data Center: (yes) / (no)

Steps to Reproduce

1. Try to update a custom field of the type Select list (cascading) by using the REST API:

curl -vvv --request PUT --user '<username>:<token>' \
-H "Content-Type: application/json" \
-d '{
 "fields": {
  "customfield_<id>": {
   "value": "<parent-name>",
   "child": {
    "value": "<child name>"
   }
 }
}
}' \
"<host>/rest/api/3/issue/<ticket-d>/

2. Check the results from the UI

Expected Results

• The custom field modification should be visible from the UI

Actual Results

• In some cases, the child option is not visible and in others you will see "None"
• From the backend side, the values are stored properly

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available