[Bug] Claude 4.6 Opus model showing degraded context understanding across conversation

Bug Description
today it seems like opus 4.6 is misunderstanding a lot, missing context from previous messages. Even the direct previous message.

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.81
• Feedback ID: 9ae9aed1-0037-43ac-ad47-dcd3857daabd

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/christopherellis/.local/share/claude/versions/2.1.81 (expected in multi-process scenarios)\n    at TET (/$bunfs/root/src/entrypoints/cli.js:2724:2174)\n    at fgq (/$bunfs/root/src/entrypoints/cli.js:2724:1318)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-23T06:17:51.299Z"},{"error":"Error: Not connected\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:53:90625)\n    at new Promise (native:1:11)\n    at request (/$bunfs/root/src/entrypoints/cli.js:53:90570)\n    at callTool (/$bunfs/root/src/entrypoints/cli.js:2547:13153)\n    at YW7 (/$bunfs/root/src/entrypoints/cli.js:2593:19297)\n    at Vx (/$bunfs/root/src/entrypoints/cli.js:2593:10640)\n    at J7$ (/$bunfs/root/src/entrypoints/cli.js:7409:8909)\n    at f (/$bunfs/root/src/entrypoints/cli.js:7409:7529)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:7409:7859)\n    at Tr (/$bunfs/root/src/entrypoints/cli.js:675:63125)","timestamp":"2026-03-23T06:20:03.402Z"},{"error":"Error: Not connected\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:53:90625)\n    at new Promise (native:1:11)\n    at request (/$bunfs/root/src/entrypoints/cli.js:53:90570)\n    at callTool (/$bunfs/root/src/entrypoints/cli.js:2547:13153)\n    at YW7 (/$bunfs/root/src/entrypoints/cli.js:2593:19297)\n    at Vx (/$bunfs/root/src/entrypoints/cli.js:2593:10640)\n    at J7$ (/$bunfs/root/src/entrypoints/cli.js:7409:8909)\n    at f (/$bunfs/root/src/entrypoints/cli.js:7409:7529)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:7409:7859)\n    at Tr (/$bunfs/root/src/entrypoints/cli.js:675:63125)","timestamp":"2026-03-23T06:20:03.402Z"},{"error":"Error: Not connected\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:53:90625)\n    at new Promise (native:1:11)\n    at request (/$bunfs/root/src/entrypoints/cli.js:53:90570)\n    at callTool (/$bunfs/root/src/entrypoints/cli.js:2547:13153)\n    at YW7 (/$bunfs/root/src/entrypoints/cli.js:2593:19297)\n    at Vx (/$bunfs/root/src/entrypoints/cli.js:2593:10640)\n    at W_8 (/$bunfs/root/src/entrypoints/cli.js:7409:9339)\n    at A (/$bunfs/root/src/entrypoints/cli.js:7409:8403)\n    at J7$ (/$bunfs/root/src/entrypoints/cli.js:7409:9229)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-23T06:20:03.402Z"},{"error":"Error: Not connected\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:53:90625)\n    at new Promise (native:1:11)\n    at request (/$bunfs/root/src/entrypoints/cli.js:53:90570)\n    at callTool (/$bunfs/root/src/entrypoints/cli.js:2547:13153)\n    at YW7 (/$bunfs/root/src/entrypoints/cli.js:2593:19297)\n    at Vx (/$bunfs/root/src/entrypoints/cli.js:2593:10640)\n    at W_8 (/$bunfs/root/src/entrypoints/cli.js:7409:9339)\n    at closeTabInIDE (/$bunfs/root/src/entrypoints/cli.js:7409:7975)\n    at H_ (/$bunfs/root/src/entrypoints/cli.js:7409:14061)\n    at w_ (/$bunfs/root/src/entrypoints/cli.js:7409:15511)","timestamp":"2026-03-23T06:25:06.787Z"}]