Strike through button doesnt not correctly

[sanil]

Strike through doesn't work for first time for the below steps:

Way to reproduce:

1) Enter some text and select it. Click strike through
2) Go to next line and click on strike through again to disable it
3) Enter some text again, select it and click strike through
4) Strike out doesn't work for the first time.
5) Again select the text and click strike through. It works

check out the screencast ​http://screencast.com/t/1ZEvYXj9zd