Edit > Select All does nothing in the Windows desktop designer

In Objo Studio on Windows, Edit → Select All does nothing while a desktop Window designer is active. The Ctrl+A shortcut selects all controls in the same designer, so the menu command and keyboard shortcut behave differently.

Expected: choosing Edit → Select All selects every control in the active Window designer, just as Ctrl+A does. Actual: the selection remains unchanged. This makes the visible menu command unusable when selecting controls for a group edit.