HomeKit not turning on correct light when instructed by Siri

I have 2 lamps defined to homekit, both connected to Wemo plugs. Living Room Lamp is defined in the Living room. Bedroom Lamp is defined in the bedroom. Prior to the last software update to my HomePod, when I asked Siri to turn on living room lamp, it only turned on the Living room Lamp. After the latest update, when I tell Siri to turn on Living Lamp, it turns on both Living room and bedroom lamps. I can tell Siri to turn off bedroom lamp and it turns it off correctly. If I tell Siri to turn on Bedroom Lamp, it only turns on the Bedroom Lamp. The only thing in common for both lamps is I have an automation rule, for each lamp, turn turn on the lamps at sunset. I deleted the automation for the bedroom lamp, now when I tell Siri to turn in Living Lamp, only the living room lamp turns on. I suspect a software glitch was introduced with the lasted update that caused the issue. Does anyone else have this issue and how did you resolve it, I'd like to add the automation rule back,,