source/blender/blenkernel/BKE_customdata.h

@@ -486,6 +486,8 @@ const char *CustomData_get_active_layer_name(const struct CustomData *data, int
  */
 const char *CustomData_get_render_layer_name(const struct CustomData *data, int type);
 
+bool CustomData_layer_is_anonymous(const struct CustomData *data, int type, int n);
+
 void CustomData_bmesh_set(const struct CustomData *data,
                           void *block,
                           int type,

source/blender/blenkernel/intern/customdata.cc

@@ -2686,6 +2686,15 @@ void CustomData_clear_layer_flag(CustomData *data, const int type, const int fla
   }
 }
 
+bool CustomData_layer_is_anonymous(const struct CustomData *data, int type, int n)
+{
+  const int layer_index = CustomData_get_layer_index_n(data, type, n);
+
+  BLI_assert(layer_index >= 0);
+
+  return data->layers[layer_index].anonymous_id != nullptr;
+}
+
 static bool customData_resize(CustomData *data, const int amount)
 {
   CustomDataLayer *tmp = static_cast<CustomDataLayer *>(

source/blender/draw/intern/draw_cache_impl_mesh.cc

@@ -358,7 +358,7 @@ static DRW_MeshCDMask mesh_cd_calc_used_gpu_layers(const Object *object,
                         CustomData_get_named_layer(cd_ldata, CD_PROP_FLOAT2, name) :
                         CustomData_get_render_layer(cd_ldata, CD_PROP_FLOAT2);
           }
-          if (layer != -1) {
+          if (layer != -1 && !CustomData_layer_is_anonymous(cd_ldata, CD_PROP_FLOAT2, layer)) {
             cd_used.uv |= (1 << layer);
           }
           break;

source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_angle.cc

@@ -248,7 +248,7 @@ static void extract_edituv_stretch_angle_init_subdiv(const DRWSubdivCache *subdi
   /* HACK to fix #68857 */
   if (mr->extract_type == MR_EXTRACT_BMESH && cache->cd_used.edit_uv == 1) {
     int layer = CustomData_get_active_layer(cd_ldata, CD_PROP_FLOAT2);
-    if (layer != -1) {
+    if (layer != -1 && !CustomData_layer_is_anonymous(cd_ldata, CD_PROP_FLOAT2, layer)) {
       uv_layers |= (1 << layer);
     }
   }

source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_uv.cc

@@ -31,7 +31,7 @@ static bool mesh_extract_uv_format_init(GPUVertFormat *format,
   /* HACK to fix #68857 */
   if (extract_type == MR_EXTRACT_BMESH && cache->cd_used.edit_uv == 1) {
     int layer = CustomData_get_active_layer(cd_ldata, CD_PROP_FLOAT2);
-    if (layer != -1) {
+    if (layer != -1 && !CustomData_layer_is_anonymous(cd_ldata, CD_PROP_FLOAT2, layer)) {
       uv_layers |= (1 << layer);
     }
   }

source/blender/python/gpu/gpu_py_state.c

@@ -470,7 +470,7 @@ static struct PyMethodDef pygpu_state__tp_methods[] = {
      pygpu_state_scissor_get_doc},
     {"scissor_test_set",
      (PyCFunction)pygpu_state_scissor_test_set,
-     METH_VARARGS,
+     METH_O,
      pygpu_state_scissor_test_set_doc},
     {"line_width_set",
      (PyCFunction)pygpu_state_line_width_set,