[Bug] Plan instructions not applied to subsequent plan presentations

Bug Description
Claude not taking my additional plan instructions into account when it proposes a new plan based on feedback/change requests (2 plans back).

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.42
• Feedback ID: d0d353be-fec7-4787-b3f7-d9b43ff6b581

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/mmonaghan/.local/share/claude/versions/2.1.42 (expected in multi-process scenarios)\n    at ZwR (/$bunfs/root/claude:3483:2098)\n    at ESA (/$bunfs/root/claude:3483:1209)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-14T20:26:26.638Z"},{"error":"Error: LSP server plugin:typescript-lsp:typescript failed to start: Executable not found in $PATH: \"typescript-language-server\"\n    at start (/$bunfs/root/claude:2334:22315)\n    at async H (/$bunfs/root/claude:2334:24763)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-14T20:26:27.381Z"},{"error":"Error: Executable not found in $PATH: \"typescript-language-server\"\n    at spawn (unknown)\n    at spawn (node:child_process:667:35)\n    at spawn (node:child_process:14:39)\n    at start (/$bunfs/root/claude:2334:20845)\n    at H (/$bunfs/root/claude:2334:24763)\n    at _ (/$bunfs/root/claude:2334:32531)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-14T20:26:27.382Z"},{"error":"Error: Failed to start LSP server plugin:typescript-lsp:typescript: Executable not found in $PATH: \"typescript-language-server\"\n    at <anonymous> (/$bunfs/root/claude:2334:32553)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-14T20:26:27.382Z"},{"error":"FileTooLargeError: File content (835.2KB) exceeds maximum allowed size (256KB). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at oY_ (/$bunfs/root/claude:1139:402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-14T20:27:13.129Z"}]