When i look in detail for login process, I see when page is loading with javascript (AngularJS) unpleasantly flash. The screenshots show chromium debugging console timeline with time when and what is happening.

I include screenshots and full dump (Timeline Trace) from chromium 42.
Time when page flashing is at around 1535 ms. (This is dependent on the system resources.)

Steps to reproduce

1. Setup and start broker.
2. Open Firefox, Chrome and go to HawtIO console login page and give attention when is page load. You can see than page after animation flash and for little moment is completely blank.

Steps to replay the captured Timeline Trace for login page load

Only requirement is have installed latest Chrome or Chromium.

1. get TimelineRawData-20160729T114753.json from HawtioLoginTimeline.tar.bz2
2. Open new tab in latest chromium/chrome and show "Developers tools". (ctrl+shift+c)
3. Go to Timeline
4. Right click to Timeline window and select_ "Load timeline data.."_ and choose "TimelineRawData-20160729T114753.json"
5. And view the time in timeline around 1535 ms.