old sessions stop accepting any input- prompt loop exits immediately with no LLM call, no error shown

Description

Issue: Old sessions (no crash involved, just resumed via /sessions after being idle since last week or so) stop accepting any input - prompt loop exits immediately with no LLM call, no error shown.

• I am using opencode CLI v1.15.13 on macOS.
• I found something similar online but mine never crashed: server: crashed run leaves zombie "running" session that blocks all message delivery, plus unrepliab… so this does not fix the problem
• Also got to know that this is the same problem while using copilot+VS code

Plugins

No response

OpenCode version

opencode CLI v1.15.13

Steps to reproduce

Type command /sessions in the opencode CLI and open a session from few days back like last week.
In that new session, do some user input.
Nothing will happen, you can keep entering new messages.

Screenshot and/or share link

Operating System

MacOS 14.5

Terminal

mac terminal with opencode CLI v1.15.13