Agent is interrupted with "Connection Error" if Subagent is running for more than two hours

I reach that again in 8.4h run in 3.16.13 (system setup) in 1c54f0c2-8482-42e6-82da-14de421709a9


The session and screenshots also have all the bugs from bug reports:


Last subagent completed its task successfully. I was able to monitor it because it was a resume-subagent and I had opened it earlier.

Main agent didn’t receive the report after my “continue work” prompt — I had to manually include it in the prompt and resend the request.