• Elon Musk defended his critique of a driver who said Tesla has "much work to do" on FSD.

• Musk said he's open to feedback, but not public criticism of an early release of FSD.

• The CEO clarified that the driver was one of few beta testers permitted to use the new software, and bugs were expected.

Elon Musk doubled down on his criticism of a Tesla driver who pointed out some flaws in the carmarker's Full Self-Driving (FSD) software.

On Tuesday, a beta tester posted videos on Twitter showing instances where FSD struggled with right turns and lane changes and said Tesla has "much work to do" on the service. Musk, who has said in the past that he welcomes negative feedback, swiftly rebuked the driver on Twitter.

"Please do not ask to be included in early beta releases and then complain," Musk tweeted in response.

The Tesla driver did not respond to a request for comment from Insider.

The Tesla CEO's comment rapidly garnered backlash on Twitter, as other users questioned why Musk would criticize a driver who said he'd paid over $32,000 for the beta software. Others pointed to past statements Musk had made extolling the importance of seeking negative feedback.

Musk was quick to clarify that he is not looking for public feedback of the latest FSD release, which was rolled out earlier this week to a select group of beta testers.

"No. Let me make something clear: James contacted me directly to be included in *early* beta, which is only ~1000 cars, mostly employees," Musk tweeted later on Wednesday. "Early beta explicitly has issues or it would be rolled out widely, so publicly criticizing something he had asked for is wrong."

The billionaire then added that "criticism, public or private, is welcome after we go to wide beta,"  — meaning after the software is released to Tesla's over 100,000 FSD subscribers.