Variable font: some glyphs exporting at double size, but only at a specific weight and width combination

Glyphs
4

I didn’t have a look at the file above, but if you want to fill up missing intermediate layers, I actually wrote a script a few weeks ago that does exactly this. It was written for a specific project with four masters, but I’m sure you can adapt it to work for any amount of masters:

# MenuTitle: Fill Up Intermediate Layers 
 # -*- coding: utf-8 -*- 
  
 __doc__ = """Adds missing intermediate layers for corresponding axis locations on all axes.""" 
  
 import itertools 
  
 axes_coords = [[] for axis in Font.axes] 
  
 for layer in Font.selectedLayers: 
     special_layers = [special_layer for special_layer in layer.parent.layers if special_layer.isSpecialLayer] 
  
     for i, axis in enumerate(Font.axes): 
         for special_layer in special_layers: 
             special_layer_coordinates = special_layer.attributes["coordinates"] 
             if list(special_layer_coordinates.values())[i] not in axes_coords[i]: 
                 axes_coords[i].append(list(special_layer_coordinates.values())[i]) 
  
     existing_special_layers = [tuple(special_layer.attributes["coordinates"].values()) for special_layer in special_layers] 
  
     necessary_coords = list(itertools.product(*axes_coords)) 
  
     missing_coords = [coord for coord in necessary_coords if coord not in existing_special_layers] 
  
     for coord in missing_coords: 
         coord_layer = GSLayer() 
         coord_layer.attributes["coordinates"] = {Font.axes[0].axisId: coord[0], Font.axes[1].axisId: coord[1]} 
         if coord[1]: 
             coord_layer.associatedMasterId = Font.masters[2].id 
         else: 
             coord_layer.associatedMasterId = Font.masters[0].id 
         coord_layer.color = 6 
         layer.parent.layers.append(coord_layer) 
         coord_layer.reinterpolate()
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