Elon Musk shared a photo of Twitter's signboard outside the company's headquarters in San Francisco on his Twitter account.
The photo showed that the letter 'w' on the signboard was covered, leading to speculation about why it was hidden.
Musk later revealed that the landlord had told them they were legally required to keep the sign as "Twitter" and could not remove the 'w', which was then painted the same color as the background.