Permanently syncing and logout doesn't work

[jkl2e]

Issue description

After sending some Funds from Account 1 to Account 2, the balance of Account 1 was negativ.
Try to logout to check the other account... Logout Button does not work.

Wallet version

0.2.1

System specification

macOS 11.2.2

Is it a repeatable issue?

not sure

Steps To reproduce the issue

Explain how the maintainer can reproduce the issue.

1. install firefly
2. finish init process
3. request tokens from faucet
4. Logut (button is working fine)
5. create secound account
6. Copy RX-Adress from second account
7. Logout from 2. account
8. Login into firs account
9. send some funds to copied address from account 1

Expected behaviour

Balance ist correct
when Logout button is pressed, the user loged out

Actual behaviour

Balance is -2 Mi
Logout button doesn't work

Errors

[jkl2e]

Entering the Settings and changing the Languages works fine...
So it's not crashed.

[Phyloiota]

Can confirm this also from my side. Logout is not clickable as long as the "refresh wheel" on "lastest transactions" is still spinning.

[cvarley100]

This seems to be caused by an occasional deadlock on the Rust side. We're in the process of fixing this.

[Phyloiota]

might be still an issue in 0.2.2- even though the syncing now is really fast (5 seconds) - as long as the wheel is spinning the logout button doesnt work - but no errors or freezing happens. A sson as fetching is finished logout works.
Reproduce: login to profile and as soon as main screen opens click logout - wheel should still spin a few seconds - during this logout not possible

[t00k]

Still an issue on 0,2,2 (Windows 10). Login to profile. Click on refresh latest transactions a few times, try to log out. Not possible. Not after 5 seconds and not after 5 minutes.

Uncaught Error: Uncaught Error: internal error in Neon module: called Result::unwrap() on an Err value: "PoisonError { inner: .. }"
at index.js:2
at a (index.js:2)
at Ar (index.js:2)
at d (index.js:2)
at HTMLButtonElement. (index.js:2)

Inside Developer Tools for every time I click the "Log out" button.
When trying to send a transaction during this state, the whole page goes white and stops answering.

[cvarley100]

Fixed in 0.3.0