Fix #13459, Fix #13546: Crash when changing NewGRFs in game with picker window open.

src/picker_func.h

@@ -10,7 +10,10 @@
 #ifndef PICKER_FUNC_H
 #define PICKER_FUNC_H
 
+#include "ini_type.h"
+
 void PickerLoadConfig(const IniFile &ini);
 void PickerSaveConfig(IniFile &ini);
+void InvalidateAllPickerWindows();
 
 #endif /* PICKER_FUNC_H */

src/picker_gui.cpp

@@ -678,3 +678,13 @@ std::unique_ptr<NWidgetBase> MakePickerTypeWidgets()
 
 	return MakeNWidgets(picker_type_widgets, nullptr);
 }
+
+void InvalidateAllPickerWindows()
+{
+	InvalidateWindowClassesData(WC_BUS_STATION, PickerWindow::PICKER_INVALIDATION_ALL);
+	InvalidateWindowClassesData(WC_TRUCK_STATION, PickerWindow::PICKER_INVALIDATION_ALL);
+	InvalidateWindowClassesData(WC_SELECT_STATION, PickerWindow::PICKER_INVALIDATION_ALL);
+	InvalidateWindowClassesData(WC_BUILD_WAYPOINT, PickerWindow::PICKER_INVALIDATION_ALL);
+	InvalidateWindowClassesData(WC_BUILD_OBJECT, PickerWindow::PICKER_INVALIDATION_ALL);
+	InvalidateWindowClassesData(WC_BUILD_HOUSE, PickerWindow::PICKER_INVALIDATION_ALL);
+}

src/saveload/afterload.cpp

@@ -63,6 +63,7 @@
 #include "../timer/timer_game_calendar.h"
 #include "../timer/timer_game_economy.h"
 #include "../timer/timer_game_tick.h"
+#include "../picker_func.h"
 
 #include "saveload_internal.h"
 
@@ -3418,6 +3419,7 @@ void ReloadNewGRFData()
 	/* Update company infrastructure counts. */
 	InvalidateWindowClassesData(WC_COMPANY_INFRASTRUCTURE);
 	InvalidateWindowClassesData(WC_BUILD_TOOLBAR);
+	InvalidateAllPickerWindows();
 	/* redraw the whole screen */
 	MarkWholeScreenDirty();
 	CheckTrainsLengths();