Screenshot
Steps to reproduce:
1.Open a page with Image
2.Open the Media Settings dialog
3.Now quickly double click on Apply changes Button
Observed Result:
An error appears in the console:
Uncaught TypeError: Cannot read property 'getSurface' of null
Media Settings dialog for that image and all other images on that page becomes unresponsive.
This is happening in Betalabs and test , not on production(en.wiki)
See the screenshot attached
Version: unspecified
Severity: minor
Attached: