https://www.theverge.com/circuitbreaker/2018/2/14/17012382/apple-homepod-white-ring-wooden-table-staining-issue-problem

Apple’s HomePod is a great sounding but ideologically flawed speaker, but it turns out there’s another major problem with the smart speaker aside from its lack of support for Spotify: apparently the silicon base of the HomePod can damage wooden furniture, with multiple outlets (including The Wirecutter and Pocket Lint) reporting that leaving the speaker on top of wooden surfaces can cause a white ring to form.

Apple has confirmed the issue to The Wirecutter, stating that “the marks can improve over several days after the speaker is removed from the wood surface,” with the company also recommending that users “try cleaning the surface with the manufacturer’s suggested oiling method” if the white rings don’t fade.