diff --git a/src/calibre/gui2/metadata/single.py b/src/calibre/gui2/metadata/single.py
index 6f45c2cf67..cf457f764f 100644
--- a/src/calibre/gui2/metadata/single.py
+++ b/src/calibre/gui2/metadata/single.py
@@ -1036,7 +1036,7 @@ def edit_metadata(db, row_list, current_row, parent=None, view_slot=None,
                 set_current_callback=set_current_callback)
         return d.changed, d.rows_to_refresh
     finally:
-        d.hide()
+        d.hide()  # possible workaround for bug reports of occasional ghost edit metadata dialog on windows
 
 if __name__ == '__main__':
     from calibre.gui2 import Application as QApplication