ExcelAsyncUtil.CalculationEnded looses user focus (busy indicator)

[emphasis87]

Not sure why that is, but when I subscribe to ExcelAsyncUtil.CalculationEnded and the function is using RxExcel.Observe, then before there is any result, Excel fires recalculation multiple times a second and each call to the delegate looses user focus (changes cursor style to busy). Is there any solution for this?

[emphasis87]

It turns out there was a loop that pushed into the observable which in turn caused recalculation and so on.