Merge pull request #591 from ARISE-Initiative/mjviewer-reset

terminate mjviewer on resets

robosuite/environments/base.py

@@ -263,6 +263,10 @@ def reset(self):
         # TODO(yukez): investigate black screen of death
         # Use hard reset if requested
 
+        # always terminate mjviewer
+        if self.renderer == "mjviewer":
+            self._destroy_viewer()
+
         if self.hard_reset and not self.deterministic_reset:
             if self.renderer == "mujoco":
                 self._destroy_viewer()