The actor made his directorial debut with the short film "HowardCantour.com," which originally premiered at the Cannes Film Festival in May 2012.
It wasn't until Monday, when the film released to the public, that bloggers took notice of its direct similarities to a Daniel Clowes comic called "Justin M Damiano."
"The first I ever heard of the film was this morning when someone sent me a link," Clowes told Buzzfeed.
"I was shocked, to say the least, when I saw that he took the script and even many of the visuals from a very personal story I did six or seven years ago and passed it off as his own work. I actually can't imagine what was going through his mind."
What really ticked off people was that LaBeouf said the comic's work inspired the film, though he didn't include the man's name in the credits.
So, he did what any called-out celebrity would do in times of trouble, he took to Twitter to apologize. Or rather, slightly apologize while still defending himself.
After the backlash, the film is now protected behind a password.
Copying isn't particularly creative work. Being inspired by someone else's idea to produce something new and different IS creative work.— Shia LaBeouf (@thecampaignbook) December 17, 2013
In my excitement and naiveté as an amateur filmmaker, I got lost in the creative process and neglected to follow proper accreditation— Shia LaBeouf (@thecampaignbook) December 17, 2013
Im embarrassed that I failed to credit @danielclowes for his original graphic novella Justin M. Damiano, which served as my inspiration— Shia LaBeouf (@thecampaignbook) December 17, 2013
I was truly moved by his piece of work & I knew that it would make a poignant & relevant short. I apologize to all who assumed I wrote it.— Shia LaBeouf (@thecampaignbook) December 17, 2013
I deeply regret the manner in which these events have unfolded and want @danielclowes to know that I have a great respect for his work— Shia LaBeouf (@thecampaignbook) December 17, 2013