Transfer_to_agent does not actually transfer?

**Describe the bug**
I'm trying to build a `CustomAgent` by extending the `BaseAgent` class and adding a few subagents. In particular I want this custom agent to orchestrate manually between the different agents that I have. The `EventActions` parameter `transfer_to_agent` does not work, it does nothing.

**To Reproduce**
The only problem is that doing something like:

```
class Orchestrator(BaseAgent):
# Define fields with type hints
name: str
description: str

def __init__(
self,
name: str | None = None,
description: str | None = None,
report_planner: LlmAgent | None = None,
report_executor: LlmAgent | None = None,
report_aggregator: LlmAgent | None = None,
# Add **kwargs to capture any other arguments BaseAgent might need
**kwargs: Any
):

# Determine the final values for initialization
# Use passed values or defaults (including class-level defaults for name/description)
final_name = name if name is not None else "RecursiveOrchestrator"
final_description = description if description is not None else "Manages task planning, execution, decomposition, and aggregation."
# Ensure sub-agents are instantiated here if not passed in
report_planner = report_planner if report_planner is not None else PlannerAgent()
final_sub_agents_list = [report_planner]

super().__init__(
name=final_name,
description=final_description,
#Pass the list of top-level sub-agents this orchestrator uses
sub_agents=final_sub_agents_list,
**kwargs
)

async def _run_async_impl(self, ctx: InvocationContext) -> AsyncGenerator[Event, None]:
"""
Main entry point for the recursive orchestrator.
Handles initial setup and recursive task processing.
"""
initial_task = ctx.session.events[0].content.parts[0].text
logger.info(f"Initial task: {initial_task}")
# Create a response event
response_text = f"Processing task: {initial_task}"
yield Event(
author=self.name,
actions=EventActions(transfer_to_agent=self.find_sub_agent("PlannerAgent").name)
)

```

This will just return an EventActions object but will not actually transfer to the agent. How can I fix? Or am I doing something wrong...
**Expected behavior**
It should handoff to another agent and that should take over, but it does not...