I discovered the bug on subject while working on an Addin where I needed such extension. Currently working on 3.2 SDK, the extension is located in the namespace ArcGIS.Desktop.Internal.Mapping.UtilityExtensions and is defined as follows:
public static Task ActivateAndDelay(this Pane pane, int delay = 100)
{
if (pane != null)
{
pane.Activate();
if (delay > 0)
{
return Task.Delay(100);
}
}
return Task.CompletedTask;
}
The bug is pretty obvious: the parameter 'delay' is just ignored. Note that this bug also affects at least another extension, ActivateAndExecute(this Pane pane, Func<Task> function, int delay = 100), since it calls ActivateAndDelay().
