Instructions updates are not taken in consideration

[plotic]

When updating or changing the instructions during an active session, the agent continues to follow earlier instructions from the session history. The new instructions are not reliably taken into account unless a new session is created. This makes it difficult to dynamically adapt agent behavior mid-session.

To Reproduce
Steps to reproduce the behavior:
1. Create a session with a new LLmAgent .
2. Start a conversation with an initial set of instructions.
3. Send a few invocations.
4. Update the instructions with a different system prompt (e.g., completely changing the greeting).
5. The agent still behaves according to the old instructions, ignoring or mixing the new ones, unless a new session is created.

Expected behavior
The agent should consistently get updated with the latest instructions provided, even within an existing session.

[surajksharma07]

Hi @plotic I tried to reproduce the issue based on your description, but it seems to be working as expected now. It's possible this was fixed in a recent update. If you're still seeing this behavior, could you please provide the version of adk-python you are using and the output of pip list.
Thanks!