[Bug] Anthropic API Error: 400 Tool Use Concurrency Issue Blocks Conversation Recovery

Bug Description
I'm getting an error in my conversation and am not able to resume/rewind : API Error: 400 due to tool use concurrency issues. Run /rewind to recover the conversation.

Environment Info

• Platform: darwin
• Terminal: xterm-256color
• Version: 2.1.116
• Feedback ID: af443d22-d06b-47ae-8095-7bd9bfd11cfd

Errors

[{"error":"Error: Tool mcp__claude_ai_Slite__ask-slite not found\n    at c97 (/$bunfs/root/src/entrypoints/cli.js:3090:31272)\n    at jD (/$bunfs/root/src/entrypoints/cli.js:477:21022)\n    at IO (/$bunfs/root/src/entrypoints/cli.js:477:39569)\n    at vh (/$bunfs/root/src/entrypoints/cli.js:477:50270)\n    at rBH (/$bunfs/root/src/entrypoints/cli.js:477:86946)\n    at nBH (/$bunfs/root/src/entrypoints/cli.js:477:85908)\n    at wTH (/$bunfs/root/src/entrypoints/cli.js:477:85729)\n    at cBH (/$bunfs/root/src/entrypoints/cli.js:477:82086)\n    at cH (/$bunfs/root/src/entrypoints/cli.js:477:6377)\n    at Ap6 (/$bunfs/root/src/entrypoints/cli.js:470:6902)","timestamp":"2026-04-29T11:10:27.239Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.5: `tool_use` ids were found without `tool_result` blocks immediately after: toolu_01Rhf56T5ACxeQoFv3xNs9hv. Each `tool_use` block must have a corresponding `tool_result` block in the next message.\"},\"request_id\":\"req_011CaXxdjYPUjW29pL9EBZoy\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:54074)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T11:10:30.396Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.5: `tool_use` ids were found without `tool_result` blocks immediately after: toolu_01Rhf56T5ACxeQoFv3xNs9hv. Each `tool_use` block must have a corresponding `tool_result` block in the next message.\"},\"request_id\":\"req_011CaXxfUWpG28BhCarTg2pd\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:54074)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T11:10:53.870Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.5: `tool_use` ids were found without `tool_result` blocks immediately after: toolu_01Rhf56T5ACxeQoFv3xNs9hv. Each `tool_use` block must have a corresponding `tool_result` block in the next message.\"},\"request_id\":\"req_011CaXxh54yT9avpo2i6bjh6\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:54074)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T11:11:15.558Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.5: `tool_use` ids were found without `tool_result` blocks immediately after: toolu_01Rhf56T5ACxeQoFv3xNs9hv. Each `tool_use` block must have a corresponding `tool_result` block in the next message.\"},\"request_id\":\"req_011CaXxkWndXdj3D4dmgcSiQ\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:54074)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T11:12:02.229Z"}]