stopWhen not getting toolResults?

{
  steps: {
    ...
    toolCalls: [
      {
        toolCallId: 'toolu_bdrk_01G7ehK9FDtjitJatsWSQzVD',
        toolName: 'save-query-tool',
        args: [Object],
        providerExecuted: undefined,
        providerMetadata: undefined
      }
    ],
    toolResults: [],
    ...
  }
}