[Bug] Opus 4.7 exhibits increased path fixation and susceptibility to misleading subagent assessments

Bug Description
opus 4.7 is frequently convincing itself of he first path it sees as the correct one, or getting thrown off by a subagent assessment that is wrong/misleading. I end up having to pull it back. Didn't have this problem as much with 4.6 I feel like.

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.1.117
• Feedback ID: 1d0145bc-c8aa-4445-bbed-2aa3a66c83b4

Errors

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.124Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at async G (B:/~BUN/root/src/entrypoints/cli.js:6202:11021)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at async V (B:/~BUN/root/src/entrypoints/cli.js:6202:11827)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: ENOENT: no such file or directory, open 'r01-varA-wonder2-pd4-6500w.png'\n    at readFileSync (unknown)\n    at readFileBytesSync (B:/~BUN/root/src/entrypoints/cli.js:53:1344)\n    at d9K (B:/~BUN/root/src/entrypoints/cli.js:587:12516)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:59.561Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:50:3448)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:26:34.358Z"}]