Matter.js corrects a pairing failure affecting Tuya-based bulbs including the NOUS Smart Bulb P3 and P4, Calex Smart Light Bulb and Arlec RGB CCT Light. The bulbs could leave pairing unanswered and, after a server restart, appear without a light entity.

The bulbs omit a required part of their device description. Ingo Fischer’s correction lets controllers using Matter.js find the light despite that omission, while logging a warning about the incomplete description.