If you drop a control on a form and set it to anchor with all four corners (effectively making it resize along with the form) then save and close the unit, then reopen it, the control has shrunk. If you now build all with it this size, it will not be the original designed size when the project is run.

Does this make sense? Basically when the form is loaded back into the designer, the width and height of the control is not restored to the original sizes when all four anchors are set.