We recently replaced the old search Issue API with the new one 

/rest/api/3/search/jql

 and observed that fields like the description are now being returned in ADF (Atlassian Document Format), which differs from the previous plain text format. This change is impacting customer configurations and causing disruptions in existing workflows.

Steps to Reproduce

1. Use the new search Issue API on Jira Cloud platform.
2. Query issues that include the description field.
3. Observe that the description is returned in ADF format instead of plain text.

Actual Results
The description field is now returned in ADF format, which is incompatible with some customer configurations that expect the field to be returned in plain text.

Workaround
Currently, there is no direct workaround to bypass the ADF format for the description field. Customers would need to manually convert the ADF format to plain text, which is inefficient and time-consuming.