Fixes #2455

Author: williamFalcon

pytorch_lightning/trainer/training_loop.py

@@ -527,6 +527,7 @@ def run_on_epoch_end_hook(self, model):
     def run_training_epoch_end(self, epoch_output):
         model = self.get_model()
         if self.is_overridden('training_epoch_end', model=model):
+            self.global_step += 1
             epoch_output = model.training_epoch_end(epoch_output)
             _processed_outputs = self.process_output(epoch_output)
             log_epoch_metrics = _processed_outputs[2]