After the most recent update of Inbound Pro I could not save any edits of any page using Avada’s Fusion Builder. The updates only saved if I used the Default Editor. Assuming there were issues with Avada’s most recent theme update I reported this to them. They disabled all my plugins (49) and started reactivating one by one. There were no issues with any updates until they reactivated Inbound Pro. That’s when no updates were saved again using Fusion Builder.
Given that Avada now has 425,000 installs you might want to investigate the problem. I have left the plugin deactivated until I hear back from you.