Hi!
I´m glad to know there is a free extesion to track time on VSTS. Great work to you guys.
In order to try it, I´d like to show an error that I´m facing when I´ve tried to add a Budget to a client.
Steps:

1. Got into Project Settings
2. Got into Extension -> Time & Effort
3. Created a Role (Dev = $40 /h)
4. Created a Client (Client = Company X)
5. Create a budget (November - 11/01/2018 to 11/30/2018 - $5000 limit)

So, on 5th step when I hit Save button then I´ve got the "loading" forever. In the first try, I leave "Hours" blank and set only "Costs". It doest work(foverer loading). On the second try, I set some hours and the costs and I also got the foverer loading.

I´ve attached 2 prinscreens.

1. The loading error
2. The Chrome console showing some JS errors.

Hope it helps.

Thanks.

Byebye