Wrong balance after Withdrowal

[antonpegov]

Balances are wrong after withdrow.

Workaround: Click Refresh button to update balances (many times).

In the first few seconds after withdrow balances are real:

But then value of "pendingDelta" temporarely becomes unadecuate:

And after another 5-10 seconds token balance are back to normal.

It is looks like Library methods zpClient.getOptimisticTokenBalanceDelta() and zpClient.getOptimisticTotalBalance() returns wrong data in the firs 5-10 seconds after transfer (and it is always -1844...) and probabely this wrong data is being saved to the history, cousing this errors: #228

And also this is probabely rootcause of #235