Problem in ActionUpdate event - Linux QT/Kde

[Basile B.]

Hello, does anyone else has experienced some problems in ActionUpdate(), under the following conditions:

• - Kde/Qt
• - Linux x86_64

ActionUpdate event is constantly called:

Currently I'm forced to lock the method with a counter.
Additional precision:

• the event is created from a Form from a TAction List.
• the problem does not exist under Windows
• Locker is a CPU-registry-wide data (NativeInt).

Code: [Select]

TMyForm.Action Update(AAction: TBasicAction; var Handled: Boolean)
Begin
  Handled := true;
  if Locker > 0 then exit;
  Inc(Locker)
  try
    //...updates: actionthis.enabled := true; actionthat.enabled := ...; and so on
  finally
    Dec(Locker);
  end;
End;


Actually if I don't use this protection pattern, the application completly locks for a while...
Has anyone else experienced the same ? LCL bug maybe ?