Free and AvailableToWithdraw fields comming as null when retrieving Asset Balances

[andresdrb]

Those fields used to come properly populated before, but recently noticed they come as null (when I know for the retrieved asset I have all its equity free).

For the following call I get, and free and AvailableToWithdraw should have teh same value as walletBalance and equity.

.V5Api.Account.GetBalancesAsync(Bybit.Net.Enums.AccountType.Unified, "LTC")

For the time being I had to workaround by doing walletBalance-Locked to et the actual free asset available, as I don0t know why this started happening