diff --git a/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py b/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py
index 341d2b107..84d8454ad 100644
--- a/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py
+++ b/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py
@@ -654,11 +654,16 @@ def manage_material_info(self):
             for u in range(u_tiles):
                 for v in range(v_tiles):
 
-                    if u != u_tiles - 1 and v != v_tiles - 1:
+                    # Check if this tile exists
+                    if int("10" + str(v) + str(u+1)) not in tiles:
+                        continue
+
+                    # Manage tile limits (inclusive or not), avoiding to have the same vertex in two tiles, if the vertex is on the limit
+                    if int("10" + str(v) + str(u+1+1)) in tiles and int("10" + str(v+1) + str(u+1)) in tiles:
                         indices = np.where((self.dots[uvmap_name + '0'] >= u) & (self.dots[uvmap_name + '0'] < (u + 1)) & (self.dots[uvmap_name + '1'] <= (1-v) ) & (self.dots[uvmap_name + '1'] > 1-(v + 1)))[0]
-                    elif u == u_tiles - 1 and v != v_tiles - 1:
+                    elif int("10" + str(v) + str(u+1+1)) not in tiles and int("10" + str(v+1) + str(u+1)) in tiles:
                         indices = np.where((self.dots[uvmap_name + '0'] >= u) & (self.dots[uvmap_name + '0'] <= (u + 1)) & (self.dots[uvmap_name + '1'] <= (1-v) ) & (self.dots[uvmap_name + '1'] > 1-(v + 1)))[0]
-                    elif u != u_tiles -1 and v == v_tiles - 1:
+                    elif int("10" + str(v) + str(u+1+1)) in tiles and int("10" + str(v+1) + str(u+1)) not in tiles:
                         indices = np.where((self.dots[uvmap_name + '0'] >= u) & (self.dots[uvmap_name + '0'] < (u + 1)) & (self.dots[uvmap_name + '1'] <= (1-v) ) & (self.dots[uvmap_name + '1'] >= 1-(v + 1)))[0]
                     else:
                         indices = np.where((self.dots[uvmap_name + '0'] >= u) & (self.dots[uvmap_name + '0'] <= (u + 1)) & (self.dots[uvmap_name + '1'] <= (1-v) ) & (self.dots[uvmap_name + '1'] >= 1-(v + 1)))[0]