PUT works inconsistent.

I created bucket in `US Standart` region. I'm uploading file via stream.

So sometimes it works, sometimes not. I tried to set region to `us-west-2` and 'us-east-1`, but still same. Works inconsistent.

Error message is:

```
SignatureDoesNotMatch
The request signature we calculated does not match the signature you provided. Check your key and signing method.AKIAJOX5SZFWUSX6AHRA
```

status code is `403`

Reproduce the streamed PUT upload against the reported bucket regions and inspect how the request is signed. Confirm the intermittent SignatureDoesNotMatch 403 is resolved by making repeated uploads succeed consistently.

Written by the indexing model from the issue text.