I met the same issue. @Parameter(title: "Amount") var amount: Double? var chosenAmount = try await $amount.requestValue() // Doesn't work since iOS18 Beta5 and in iOS 18 RC

@Parameter(title: "Transaction Remark") var transactionRemark: String? Optional String type doesn't work either.

I find the bug condition, in iOS18 RC, if the ParameterSummary of AppIntent contain some IntentParameter, the requestValue method no longer works when it(requestValue) is called in the body of func perform()