[BUG] macOS Claude Desktop 1.8555.2: onQuitCleanup(mcp-shutdown) TypeError still firing after #58533 marked completed

Related Claude Code issues

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• [BUG] Claude Desktop on Windows: `onQuitCleanup(mcp-shutdown)` TypeError still firing in v1.6608.2 — silent auto-restarts continue (refile of #55798)
  Resolved 💬 1 v2.1.128 #58533
• [BUG] Claude Desktop auto-restarts at 5-hour usage-limit boundary on Windows — onQuitCleanup(mcp-shutdown) TypeError on undefined isDestroyed
  Resolved 💬 2 v2.1.121 #55798
• [Bug] MCP Server Shutdown Failure on /exit Command in v1.0.63+
  Resolved 💬 11 #5506
• [Bug] MCP server connection error on exit: "/mcp" server failure during shutdown
  Resolved 💬 1 v2.1.63 #29771
• [BUG] [Critical] Claude Desktop v1.8555.2 crashes on launch with V8 OOM on macOS Tahoe 26.4.1
  Resolved 💬 1 #61992
• [BUG] TypeError in Playwright MCP browser_install Tool
  Resolved 💬 3 #4955
• [BUG] API Error (TypeError), no connection
  Resolved 💬 2 #1267
• [BUG] Multi agents run out of context, unable to /compact and tasks are marked as completed when they are not
  Resolved 💬 4 v2.0.76 #16069

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Same class of failure, ranked by community engagement — this issue is one of many, so it may not appear in the visible list: MCP server connection issues

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