Hey Jason. Thanks for the note here, and sorry to hear you’re having problems. I just tested this out and was unable to recreate your issue…but it’s possible I’m not following the same steps as you.
Here’s what I did:
1) Added a new event.
2) Uploaded an image to the description section.
3) Re-entered that image via the ‘edit’ icon that appeared in its upper-left hand corner.
4) Removed the link to the file that was there by default and changed it to something generic like http://www.cnn.com.
5) Hit update and the pop-up closed.
6) When I opened the pop-up again, my reference to CNN.com was indeed still in place.
Did you reach this through a different set of instructions? If so, please let me know and I’ll try to recreate / troubleshoot accordingly with you from there. Thanks!