I can't sort by more than three columns in my issue navigator.

If I try to, the first sort I picked falls off the stack.

Also the method of defining sort order precendence is awful. Even Microsoft Excel has a better sort precedence definition interface. All we need is a simple Sort by X ascending, then by Y ascending, then by Z ascending, then by A ascending type of functionality. Clicking the columns 1-2 times each in reverse order of precedence is non-intuitive.