In the Delphi 7.1 VCL IDE Integration Pack for Delphi 8, the Position property of a TForm now defaults to poDefaultPosOnly.
Therefore, if you create a form but did not set the Position property to poDesigned, it is likely that your form will not appear in the expected location.
Changing the Position property to poDesigned will fix the problem.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes