This is certainly interesting behavior! When making bug reports, so that we can investigate properly, please be sure to provide as many details as possible.
For those experiencing this, here are some questions that will help in looking into it:
Did this just begin today? With 2.2.1?
Does this happen to you in every Warzone?
Does it happen when doing any other switching of instances (such as entering a Flashpoint)?
Are you able to correct the issue with a UI reset (CTRL+ U twice)?
Thanks for any additional details you can provide!