Twitter API Background Image Updating Bug?

I am creating a PHP script to automatically change my Twitter account’s background image and profile image. So far, the code is working for the background image change but Twitter’s servers seem to be slow in recognizing the changes.

I have submitted a report to the Twitter API team about this issue and I hope they can tell me why it isn’t working.

My script is able to upload the background image to Twitter but it does not get displayed instantly. I end up seeing no background image and just my Twitter background colour. My Twitter account’s XML file does not display the right background file but if I click on the “save changes” button in “settings -> design”, the background magically appears.

Check out my video of this strange background image bug below. Click on the full screen button for a better view.

I hope this issue would be fixed soon because I would love to automatically update my Twitter profile’s avatar automatically with 3rd party services like Daily Mugshot and Gravatar. It would also be great to randomly update my Twitter background everyday too.