[BUG] Anthropic models accessed through Bedrock in 3.66.0+ give API request failed

[emeraldcheshire]

Problem (one or two sentences)

Anthropic models accessed through Bedrock in 3.66.0+ give API request failed with an ugly "function(e,t=!1)..." message (see below for full details).

3.64.0 is the last working release version.

Context (who is affected and when)

Users upgrading past 3.64.0.

Reproduction steps

1. Windows
2. Model provider Amazon Bedrock / Amazong Bedrock API Key / us-east / Use cross-region / Enable prompt caching / anthropic.claude-opus-4.8
3. Say hi in Ask mode

Expected result

The prompt is processed

Actual result

API error returned

Variations tried (optional)

No response

App Version

3.69.100251

API Provider (optional)

No response

Model Used (optional)

Claude Opus 4.8 and others

Zoo Code Task Links (optional)

No response

Relevant logs or errors (optional)

Date/time: 2026-07-15T21:06:34.571Z
Extension version: 3.69.100251
Provider: bedrock
Model: anthropic.claude-sonnet-4-5-20250929-v1:0

Provider ended the request: Unknown Error: function(e,t=!1){return this.sort(((a,r)=>{const i=e(a),n=e(r),o=t?-1:1;return"string"==typeof i&&"string"==typ...<omitted>...s} could not be cloned.