A day after a debacle began about the HomePod silicone ring on the base of the unit was causing a stain to appear on some wood surfaces, it looks that the Sonos One has a similar issue with its own vibration-insulating feet.
A reviewer at Tom's Guide noted the markings that were caused by the feet of the Sonos One. Instead of a solid ring, Sonos has elected for four raised "feet" — and contact with those feet is similarly inducing the temporary markings on furniture.
The HomePod's manifestation of the white markings was first spotted on Wednesday. it is manifesting from contact with "oiled" wood surfaces and the silicone ring on the bottom of a HomePod.
It is not appearing on all wood surfaces. AppleInsider's HomePod used for testing has been in a fixed location on a finished wood surface since Saturday, and no ring has developed.
"It is not unusual for any speaker with a vibration-dampening silicone base to leave mild marks when placed on some wooden surfaces," the Apple support webpage for the HomePod reads. "The marks can be caused by oils diffusing between the silicone base and the table surface, and will often go away after several days when the speaker is removed from the wooden surface. If not, wiping the surface gently with a soft damp or dry cloth may remove the marks. If marks persist, clean the surface with the furniture manufacturer's recommended cleaning process. If you're concerned about this, we recommend placing your HomePod on a different surface."
It appears that glass, granite, MDF plywood, polyurethane-sealed wood, and laminate furniture such as that found in Ikea are not affected by the problem — which makes sense if the problem is a reaction between different silicone mixes.