So, we all have different ways of using the camera in MMOs, and for most of us this may not be a problem. For me, I like to use RMB almost exclusively. RMB, Forward, Back, and Strafe are my entire movement options; I don't use the keyboard to move the camera at all.
Unfortunately, RMB is also the context pop-up menu button, and this function can't be rebound. This wouldn't be a problem, except that the interval for clicking RMB and getting a menu is way too long, and, more importantly, is not interrupted by mouse movement between pressing and releasing the button.
This means that moving the camera for a very short period of time using RMB will cause a pop-up menu to appear, if RMB is released while hovering over an entity. This will make your next key press do either: nothing, removing the context menu, or whatever hotkey you've accidentally pressed within the menu. As a Mastermind, I'm constantly setting one pet to Aggressive or Defensive instead of strafing after making a small camera adjustment. It's extremely aggravating to have these constant control hiccups as I'm playing the game.
Shortening the interval itself could solve this problem, but probably a much better option is just to make sure that mouse movement interrupts the ability for a context menu to appear after clicking down RMB. I'm hoping that would be an easy adjustment in the code, but god only knows. Possibly an easier fix would be the ability to rebind the context menus to another button. In the meantime, I have to bind camera look to mousewheel click, which is kind of an uncomfy stopgap. Would love to see this fixed!