Steps to reproduce:
1.Click the button Edit
2.Quickly switch to read tab and again switch back to edit button
Observed Result:
An error appears in the console
Uncaught TypeError: Cannot call method 'getModel' of null load.php:37
ve.init.mw.ViewPageTarget.updateToolbarSaveButtonState load.php:37
(anonymous function) load.php:43
fire load.php:12
self.fireWith load.php:14
self.fire load.php:14
(anonymous function)
Version: unspecified
Severity: normal