These enhancements went live tonight:

• New loading indicator appears on registration forms. It was possible, especially with large forms on slower devices, for attendees to start filling out a form prior to it being ready. 

And the following bugs were fixed:

• Merges for certain accounts were failing due to some new features recently added. They now merge again like butter. 
• Under rare circumstances, the add/edit vehicle button on admin registration forms could stop working.
• After editing and saving a vehicle on the registration form, the next page would belatedly and unhelpfully render one or more "Vehicle saved" messages.