Sizing the columns issue with layered win

Hey there, I'm having difficulties with my report control.  When I resize the columns, (click and and drag on edge of columns), it causes all my floated panes(including the current pane) to disappear until i let go of the click.  This also only happens if the pane is floated.  If it is docked, then this issue doesn't happen.

A big key note is:  My windows are layered(we have semitransparent windows) .  When I dont layer the windows, resizing the columns works fine.  Here is where the overloaded Create where I set the windows to be layered.

BOOL CTacDockingPaneMiniWnd::Create(CRect rc)
{
 BOOL bRet = CXTPDockingPaneMiniWnd::Create(rc);
 if (bRet)
 {
  if (G_USETRANSPARENCY)
  {
   SetWindowLong(m_hWnd,GWL_EXSTYLE,GetWindow Long(m_hWnd,GWL_EXSTYLE) | WS_EX_LAYERED);
   SetLayeredWindowAttributes(RGB(0,0,0),(BYT E)255,LWA_ALPHA);
  }
 }
 return bRet;
}

Just as a note, for panes with TreeCtrl, this issue does not happen when you resize the columns.

Is there any way I can resolve this issue with layered windows?  I'm fresh out of ideas.  Thanks All!!!

Alrighty,  what you sent, I tried it on my development system(Windows 2000), and it makes the docking panes disappear when you resize the columns.

I decided to try it on my Windows XP machine and it works completely fine.  Try this program(same as yours) on a windows2000 machine. 

Here is my exe build on windows2000 machine(debug). 

2006-01-16_145432_alphafloating.zip