BoardDesignSettings are owned by FOOTPRINT_EDITOR_SETTINGS in the FP Editor.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/14925

pcbnew/initpcb.cpp

@@ -31,6 +31,7 @@
 
 #include <board.h>
 #include <board_design_settings.h>
+#include <footprint_editor_settings.h>
 
 #include <footprint_edit_frame.h>
 #include <widgets/appearance_controls.h>
@@ -132,7 +133,9 @@ bool FOOTPRINT_EDIT_FRAME::Clear_Pcb( bool doAskAboutUnsavedChanges )
     {
         SetBoard( new BOARD );
 
-        GetBoard()->GetDesignSettings() = GetDesignSettings();
+        if( FOOTPRINT_EDITOR_SETTINGS* cfg = GetSettings() )
+            GetBoard()->GetDesignSettings() = cfg->m_DesignSettings;
+
         GetBoard()->SynchronizeNetsAndNetClasses( true );
 
         // This board will only be used to hold a footprint for editing