[xmonad] Unreliable focus actions in Floating layout

Hi, another PITA of floating windows handling in Xmonad: 1) set floating layout on an empty workspace (SimplestFloat or SimpleFloat) 2) launch two X window applications consecutively, like xterm and then gVim 3) try to change focus with a keyboard - Prev/Next (Mod-j or Mod-k by default) - FOCUSED WINDOWS ALWAYS POPS UP 4) now try to move a bit the top window with a mouse (Mod-MouseButton1 by default) 5) try to change focus again like in point 3) -> FOCUSED WINDOW DOES NOT POP UP AND STAYS BELLOW Is ths a bug, a feature or am I missing something here ?