On Mon, Apr 15, 2019 at 10:52 AM Michael Van Canneyt via lazarus <lazarus at lists.lazarus-ide.org> wrote: > When you work with frames, you cannot change the frame in the designer when > the frame is used in other frames/forms. Maybe related to : https://bugs.freepascal.org/view.php?id=20026 or https://bugs.freepascal.org/view.php?id=12483 Juha