Hi,

It seems to be a resize problem with the ultragroupbox. If the groupbox is resized during startup, its childcontrols does not resize if they are anchored or docked.

Steps to reproduce:

1. Change the windowstate property of the form to Maximized (this will cause a resize during startup).

2. Place an ultragroupbox on the form. Change its Anchor to Left, Right, Top and bottom.

3. Place an ultratexteditor (or a standard textbox) in the groupbox. Change the dock property of the textbox to fill. Change the multiline property of the textbox to true. The textbox is now filling the entire groupbox and should do this all time.

Now run the application and see that the textbox is not filling the groupbox. If the form is resized later on the groupbox and its childcontrols resize correctly.