[BUG] Claude code crashes

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

every time I use refer to a directory Claude code crashes.

❯ claude --version
2.0.22 (Claude Code)
❯ claude

 ▐▛███▜▌   Claude Code v2.0.22
▝▜█████▛▘  us.anthropic.claude-sonnet-4-5-20250929-v1:0 · API Usage Billing
  ▘▘ ▝▝    /work/<redacted path>/demonstrate-full-workflow

> there is a uv environment @<redacted path> i want to create section for test-and-eval for the packages that are only installed in a test environment. 
  ⎿  Listed directory <redacted path>

✻ Inferring… (esc to interrupt)

─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
>  
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  ? for shortcuts                                                                                                                              Thinking off (tab to toggle)
3320 | ${Object.entries(G).map(([Y,W])=>`# ${Y}
3321 | ${W}`).join(`
3322 | `)}
3323 | 
3324 |       IMPORTANT: this context may or may not be relevant to your tasks. You should not respond to this context unless it is highly relevant to your task.
3325 | `,isMeta:!0}),...Z]}async function iUY(Z,G){if(tS())return;let[{tools:Y},W,X,J]=await Promise.all([Ok0(Z),sw(G),f7(),x7()]),B=J.gitStatus?.length??0,Q=X.claudeMd?.length??0,V=B+Q,K=I9(),H=K9();setTimeout(()=>H.abort(),1000);let z=await Hq0(o1(),H.signal,K.ignorePatterns??[]),I=0,$=0,F=0,w=0,U=0,N=W.filter((E)=>!E.isMcp);I=Y.length,w=N.length;let O=new Set;for(let E of Y){let T=E.name.split("__");if(T.length>=3&&T[1])O.add(T[1])}$=O.size;try{if(Y.length>0){let{mcpToolTokens:E}=await TQ0(Y,async()=>G,null);F=E}if(N.length>0)U=await pUY(W,async()=>G,null)}catch{}G0("tengu_context_size",{git_status_size:B,claude_md_size:Q,total_context_size:V,project_file_count_rounded:z,mcp_tools_count:I,mcp_servers_count:$,mcp_tools_tokens:F,non_mcp_tools_count:w,non_mcp_tools_tokens:U})}function nUY(Z,G){switch(Z.name){case pY.name:{let Y=pY.inputSchema.parse(G),{command:W,timeout:X,description:J,run_in_background:B}=Y,Q=W.replace(`cd ${o1()} && `,"");if(Q=Q.replace(/\\\\;/g,"\\;"),/^echo\s+["']?[^|&;><]*["']?$/i.test(Q.trim() | ... truncated 

error: No assistant message found
      at gb (/$bunfs/root/claude:3325:12889)
      at async <anonymous> (/$bunfs/root/claude:3325:21638)
      at async Om1 (/$bunfs/root/claude:3325:2017)
      at async SV (/$bunfs/root/claude:3325:21495)
      at async _tG (/$bunfs/root/claude:3332:208)
      at processTicksAndRejections (7:39)

Bun v1.2.23 (Linux x64 baseline)

What Should Happen?

it should not crash.

Error Messages/Logs

Steps to Reproduce

every time I use refer to a directory Claude code crashes.

❯ claude --version
2.0.22 (Claude Code)
❯ claude

 ▐▛███▜▌   Claude Code v2.0.22
▝▜█████▛▘  us.anthropic.claude-sonnet-4-5-20250929-v1:0 · API Usage Billing
  ▘▘ ▝▝    /work/<redacted path>/demonstrate-full-workflow

> there is a uv environment @<redacted path> i want to create section for test-and-eval for the packages that are only installed in a test environment. 
  ⎿  Listed directory <redacted path>

✻ Inferring… (esc to interrupt)

─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
>  
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  ? for shortcuts                                                                                                                              Thinking off (tab to toggle)
3320 | ${Object.entries(G).map(([Y,W])=>`# ${Y}
3321 | ${W}`).join(`
3322 | `)}
3323 | 
3324 |       IMPORTANT: this context may or may not be relevant to your tasks. You should not respond to this context unless it is highly relevant to your task.
3325 | `,isMeta:!0}),...Z]}async function iUY(Z,G){if(tS())return;let[{tools:Y},W,X,J]=await Promise.all([Ok0(Z),sw(G),f7(),x7()]),B=J.gitStatus?.length??0,Q=X.claudeMd?.length??0,V=B+Q,K=I9(),H=K9();setTimeout(()=>H.abort(),1000);let z=await Hq0(o1(),H.signal,K.ignorePatterns??[]),I=0,$=0,F=0,w=0,U=0,N=W.filter((E)=>!E.isMcp);I=Y.length,w=N.length;let O=new Set;for(let E of Y){let T=E.name.split("__");if(T.length>=3&&T[1])O.add(T[1])}$=O.size;try{if(Y.length>0){let{mcpToolTokens:E}=await TQ0(Y,async()=>G,null);F=E}if(N.length>0)U=await pUY(W,async()=>G,null)}catch{}G0("tengu_context_size",{git_status_size:B,claude_md_size:Q,total_context_size:V,project_file_count_rounded:z,mcp_tools_count:I,mcp_servers_count:$,mcp_tools_tokens:F,non_mcp_tools_count:w,non_mcp_tools_tokens:U})}function nUY(Z,G){switch(Z.name){case pY.name:{let Y=pY.inputSchema.parse(G),{command:W,timeout:X,description:J,run_in_background:B}=Y,Q=W.replace(`cd ${o1()} && `,"");if(Q=Q.replace(/\\\\;/g,"\\;"),/^echo\s+["']?[^|&;><]*["']?$/i.test(Q.trim() | ... truncated 

error: No assistant message found
      at gb (/$bunfs/root/claude:3325:12889)
      at async <anonymous> (/$bunfs/root/claude:3325:21638)
      at async Om1 (/$bunfs/root/claude:3325:2017)
      at async SV (/$bunfs/root/claude:3325:21495)
      at async _tG (/$bunfs/root/claude:3332:208)
      at processTicksAndRejections (7:39)

Bun v1.2.23 (Linux x64 baseline)

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.22

Platform

AWS Bedrock

Operating System

Other Linux

Terminal/Shell

Xterm

Additional Information

_No response_