The property "" expected a value of type but the provided value is of type "any".bicep(BCP036)

[slavizh]

Bicep version
Bicep CLI version 0.4.63 (7ebed03)

Describe the bug
I have the following code:

resource eventSubscription 'Microsoft.EventGrid/systemTopics/eventSubscriptions@2020-10-15-preview' = {
  name: '${eventGridSystemTopicName}/${subscription.name}'
  properties: {
    deliveryWithResourceIdentity: subscription.destination.useIdentity ? endPointPropertiesWithIdentity[toLower(subscription.destination.type)] : null
    destination: subscription.destination.useIdentity ? null : endPointProperties[toLower(subscription.destination.type)]
    filter: {
      subjectBeginsWith: subscription.filter.beginsWith
      subjectEndsWith: subscription.filter.endsWith
      includedEventTypes: subscription.filter.eventTypes
      isSubjectCaseSensitive: subscription.filter.caseSensitive
      enableAdvancedFilteringOnArrays: subscription.filter.enableAdvancedFilteringOnArrays
      advancedFilters: [for advancedFilter in subscription.filter.advancedFilters: {
        key: advancedFilter.key
        operatorType: advancedFilter.operator
        value: union(defaultAdvancedFilterObject, advancedFilter).value
        values: union(defaultAdvancedFilterObject, advancedFilter).values
      }]
    }
  }
}

This results in warning message:

The property "operatorType" expected a value of type "'BoolEquals' | 'IsNotNull' | 'IsNullOrUndefined' | 'NumberGreaterThan' | 'NumberGreaterThanOrEquals' | 'NumberIn' | 'NumberInRange' | 'NumberLessThan' | 'NumberLessThanOrEquals' | 'NumberNotIn' | 'NumberNotInRange' | 'StringBeginsWith' | 'StringContains' | 'StringEndsWith' | 'StringIn' | 'StringNotBeginsWith' | 'StringNotContains' | 'StringNotEndsWith' | 'StringNotIn'" but the provided value is of type "any".bicep(BCP036)

This should not result in such warning as far as I understand.

[majastrz]

Good find! This is definitely not expected.