I\'ve launched an application last week and have noticed since that in Chrome only the height of my canvas is not always adjusted. I\'ve spent a bunch of hours looking at the is
This can also happen when you configure your fb app wrongly, check next three steps
1- make sure that redirect_uriof your facebook app isnt missing
Go to your App >> Settings >> Advanced >> Security. then set the
redirect_uri
2- Make sure that login Client OAuth Login and Embedded browser OAuth Login is allowed for your app
Go to your App >> Settings >> Advanced >> Security. then select "yes" for both
Client OAuth LoginandEmbedded browser OAuth Login
3- Don't forget also to configure your app to accept logins from your site
Go to your App >> Settings >> Add platfrom >> Website. then set
Site URLwith your domain.