Elon said in a recent earnings call that, while they would probably be fine without a raise, they expected it would make investors more comfortable if they did a raise and thus might do one.
"Elon said..." has started enough apologies for Tesla's poor judgement that I've become numb to it. They're all of the form "while it may look like we're weak, actually...(poorly reasoned explanation for the weakness)", and it has been going on for years.