Comment 26 for bug 739812

There is no *good* solution to this problem. Accessibility software will need some fashion to communicate that it is an accessibility window and thus should be above EVERYTHING even panel type windows. This is not currently something that there is a valid EHWM method of specifying. We will likely have to add a proposed expansion to the EHWM spec, implement it, and patch valid targets to match. We could also add a plugin to the window manager to detect windows that should be using the spec (by strict matching rules) and set the hint for them since X is cool like that.

The point is that this is not a "fix in unity" but a fix in the commincation protocol we use for windowing. This would be a problem regardless of X or Wayland too, so we just need to define a spec and fix it.