Agent isn't aware of interrupted responses

[Yahiewi]

Currently the agent isn't aware of the response it started generating if the user chooses to interrupt it using Stop Streaming.
History seems to be corrupted a bit when interrupting the agent:

Screencast.from.2026-03-06.14-12-49.mp4

This example shows a conversation that went like this:
-User: "Generate a long poem"
-Claude: Starts generating poem titled "The Wanderer's Chronicle" then gets interrupted by the user
-User: "What was the last prompt and what was your response to it?"
-Claude: Generates another poem title "The Journey of Stars" first and says he has interpreted the last prompt as "Generate a long poemWhat was the last prompt and what was your response to it?"

Sometimes the scenario is slightly different with the AI responding to only the second prompt when prompted again. However, it is always unaware of the response it started generating.

I tried this same test with ChatGPT and Claude (web versions) and they both were able to answer me correctly on the content of the response they started generating. I also tried Copilot which surprisingly failed at this and Google Antigravity which passed this test.

[brichet]

Thanks @Yahiewi for opening this, I recently noticed the same thing.

It seems that the stopped response is not save in history at all, so the LLM can't be aware of it for the second call.

Below a screenshot of the history sent to the LLM when sending the second message (first response was interrupted but there is no trace of it)