Describe the bug

We have started to experience error of type "Item ‘rs_ABCD’ of type ‘reasoning’ was provided without its required following item" when an agent does a handoff to another agent (o4-mini with low effort to o4-mini with medium effort).

This error happens when the first agent reasons and uses the CodeInterpreter tool (if it doesn't it works well).

This might be related to this issue from the Developer Community.

Debug information

• Agents SDK version: (e.g. v0.1.0)
• Python version (e.g. Python 3.11)