user has to open preferences tab to be able to send amq messages in Hawt.io

I'm aware of issue ENTESB-865, BUT
we obviously have username and password which was used to log into hawtio somewhere in javascript variable, so why user has to go into preferences to be able to send amq message?

When I open new anonymous tab in Chrome, there is nothing unusual in localStorage .
I can go to ActiveMQ tab, create queue and try to send some message as described in issue ENTESB-865 and it fails for missing credentials.

Now I just click on preferences, do nothing and magically username with password is filled and stored into localstorage.
I can close preferences tab and sending messages works fine now.

Why is it necessary to open settings page when we already know required login & password?
Btw I didn't check "Remember me" on login page, but when i log out, localStorage still contains plaintext login & password