--- a/src/eric7/Plugins/ViewManagerPlugins/Tabview/Tabview.py	Thu Sep 08 16:57:18 2022 +0200
+++ b/src/eric7/Plugins/ViewManagerPlugins/Tabview/Tabview.py	Thu Sep 08 17:30:29 2022 +0200
@@ -365,6 +365,7 @@
                         ext = os.path.splitext(fileName)[1]
                         self.__startAct.setEnabled(
                             ext in Preferences.getDebugger("Python3Extensions").split()
+                            or self.contextMenuEditor.isPy3File()
                         )
                     else:
                         self.openRejectionsMenuAct.setEnabled(False)