[BUG] Significant delay before Claude Code starts consuming tokens via Bedrock

Environment

• Platform (select one):
• [x ] Anthropic API
• [x ] AWS Bedrock

• Claude CLI version: 1.0.60
• Operating System: RHEL 8.10 OpenShift Devspaces
• Terminal: VSCode 1.90.0

Bug Description

Significant delay before Claude starts consuming tokens.

Steps to Reproduce

npm install -g @anthropic-ai/claude-code@1.0.60
export AWS_CA_BUNDLE="/etc/ssl/certs/ca-bundle.crt"
aws sso login --profile=someprofilename
export AWS_PROFILE=someprofilename
export CLAUDE_CODE_USE_BEDROCK=1
export AWS_REGION=us-east-2
export ANTHROPIC_MODEL='us.anthropic.claude-sonnet-4-20250514-v1:0'

Expected Behavior

Tokens should be consumed immediately after interaction.

Actual Behavior

382s + 0 tokens consumed. Takes anywhere from 5-10min to consume tokens. Eventually it will work. Prior version of claude code have no issues. AWS support confirmed it is not with SSO or Bedrock service.