As a Roblox developer, it is currently not efficient to publish models by clicking the existing item and hitting submit in the publish model prompt.
Why?
By instinct, people sometimes double-click the item to submit that item. It doesn’t. All it does is turn the submit button grey, still with a checkmark on the item thumbnail. You would now have to reselect the item to get it to register you want that, then submit.
Proposed Solution: Make double-clicking submit the item you double-clicked in the publish model prompt.