Fetching Web3 init on main thread

[rstormsf]

If I try to get Web3 object not using Redux store, it works perfectly fine and I don't get any errors:
if I use it with 'https://ropsten.infura.io/metamask'
I cannot initialize it, I get errors, 405 POST , Invalid JSON rpc response
I assume it has something to do with the way web3 is being fetched.
I guess Redux store is trying to use it on main thread and for some reason is not ok to do this way.
httpprovider.js:61 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated

The same thing happens when I just run this repo with metamask.
It breaks initialization of web3.

Error: Invalid JSON RPC response: {"id":1,"jsonrpc":"2.0"} 

[rstormsf]

It could be because of onLoad event listener which is called by any import function.
https://github.com/truffle-box/react-auth-box/blob/master/src/util/web3/getWeb3.js#L14

[rstormsf]

By digging more into it, I found that Chrome Redux extension breaks the calls. If I disable it, everything works just fine.