misinterprets rate limit?

[bogorad]

in opencode, plan mode, opus-45. first request succeeds. then some minimal wok done by gemini-3-pro. then back to plan, opus-45 fails. latest opencode, opencode-antigravity-auth=1.2.6. paid google-ai plan.

{
  "type": "error",
  "error": {
    "type": "invalid_request_error",
    "message": "messages.3.content.0: Invalid `signature` in `thinking` block"
  },
  "request_id": "req_vrtx_011CWVfumACpZkPWXr4rsDtC"
}

[Debug Info]
Requested Model: claude-opus-4-5-thinking
Effective Model: claude-opus-4-5-thinking
Project: striped-torus-zq6tl
Endpoint: https://cloudcode-pa.googleapis.com/v1internal:streamGenerateContent?alt=sse
Status: 400
Request ID: N/A
Tool Debug Missing: 7

Tool Debug Summary:
decl=bash,src=functionDeclarations,hasSchema=y |
decl=read,src=functionDeclarations,hasSchema=y |
decl=glob,src=functionDeclarations,hasSchema=y |
decl=grep,src=functionDeclarations,hasSchema=y |
decl=task,src=functionDeclarations,hasSchema=y |
decl=webfetch,src=functionDeclarations,hasSchema=y |
decl=todowrite,src=functionDeclarations,hasSchema=y |
decl=todoread,src=functionDeclarations,hasSchema=n |
decl=skill,src=functionDeclarations,hasSchema=y |
decl=Ref_ref_search_documentation,src=functionDeclarations,hasSchema=y |
decl=Ref_ref_read_url,src=functionDeclarations,hasSchema=y |
decl=repomix_pack_codebase,src=functionDeclarations,hasSchema=y |
decl=repomix_pack_remote_repository,src=functionDeclarations,hasSchema=y |
decl=repomix_attach_packed_output,src=functionDeclarations,hasSchema=y |
decl=repomix_read_repomix_output,src=functionDeclarations,hasSchema=y |
decl=repomix_grep_repomix_output,src=functionDeclarations,hasSchema=y |
decl=repomix_file_system_read_file,src=functionDeclarations,hasSchema=y |
decl=repomix_file_system_read_directory,src=functionDeclarations,hasSchema=y |
decl=nix_nixos_search,src=functionDeclarations,hasSchema=y |
decl=nix_nixos_info,src=functionDeclarations,hasSchema=y

[bogorad]

bot upon restart of opencode it works. weird.