Sub-sub-agents (depth: 2) "ask" permission doesn't surface to user and stalls

Description

When configuring OpenCode settings "subagent_depth" to 2, allowing subagents to deploy subagents at one level below, if a cascaded subagent tries to access any permission that is configured to "ask", the permission request never surfaces up to the user and the session stalls.

This can be easily tested with native "general" subagent by giving them access to deploy "explore" subagents.

Plugins

No response

OpenCode version

1.18.7

Steps to reproduce

1. Setup your opencode.json settings with subagent depth 2 and grant a subagent like general with task access to deploy explore subagents:

{ "$schema": "https://opencode.ai/config.json", "subagent_depth": 2, "agent": { "general": { "tools": { "task": true }, "permission": { "task": { "*": "deny", "explore": "allow" } } } } }

2. Deploy a @general subagent asking to deploy a explore subagent to access any permission that would require "ask", e.g. external_directory access.

3. Sub-sub-agent permission request never surface to user and session stalls.

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Operating System

Ubuntu 24.04

Terminal

SSH over WSL