a136e0625f
GridStack v12 removeInternalForSave() deletes w/h properties from save() output when they equal minW/minH (or 1). This caused _removeDemoView() to pass h:undefined to grid.update(), which GridStack then defaulted to h:1, shrinking all tiles. Fix: save layout by reading node properties directly instead of using _grid.save(false), ensuring w and h are always preserved.