ExceptionMessage not populated in ExecuteActionWorkflowAsync

[rmbrunet]

Is the ErrorMessage in the Rule definition just a template with possible interpolated values that are substituted after rule execution and then copied to the ExceptionMessage? At least that is what I see after ExecuteAllRulesAsync. But surprisingly, I don't see the ExceptionMessage been set after ExecuteActionWorkAsync. Maybe a call to FormatErrorMessages is missing in ExecuteActionWorkflowAsync?

Thanks!