Linear MCP plugin: create_issue tool advertised but returns 'Tool not found'

Bug Description

The linear@claude-plugins-official plugin advertises a create_issue tool (via mcp__claude_ai_Linear__create_issue), but calling it returns:

MCP error -32602: Tool create_issue not found

Steps to Reproduce

1. Enable linear@claude-plugins-official plugin in Claude Code settings
2. Use ToolSearch to discover and load mcp__claude_ai_Linear__create_issue — it loads successfully and shows the full schema
3. Call the tool with valid parameters:

``json
{
"title": "Test issue",
"team": "Tools",
"description": "Test",
"assignee": "me",
"priority": 2
}
``

1. Returns: MCP error -32602: Tool create_issue not found

Expected Behavior

The tool should create a Linear issue as described in its schema.

Actual Behavior

The tool is listed in the deferred tools and loads successfully via ToolSearch, but the Linear MCP server does not recognize it when called. JSON-RPC error code -32602 ("Invalid params") with message "Tool create_issue not found".

Other Linear Tools Work

Read operations on the same MCP connection work fine:

• mcp__claude_ai_Linear__list_teams ✅
• mcp__claude_ai_Linear__list_issues ✅
• mcp__claude_ai_Linear__get_issue ✅

The issue is isolated to create_issue.

Environment

• Claude Code (VSCode extension)
• macOS (Darwin 25.2.0)
• Plugin: linear@claude-plugins-official enabled in ~/.claude/settings.json