Mamba Hyperflux Power Issue

Hey all. New to the Razer ecosystem. Received my Razer Firefly + Mamba Hyperflux a couple days ago and am very pleased with my purchase. It feels so premium compared to my old wireless 3-button laser mouse I've been using since 2008 lol. I searched forums and didn't find anything quite like my issue so I'm posting here. My problem is when I shut down my PC all the LEDs and power indicators turn off as they should BUT if I move the mouse on the pad after that the mouse LEDs and power indicator light up and will stay on. Keep in mind the Firefly power indicator and LEDs are still off so it should not be providing power correct? I think it's strange that the Mamba is still receiving power. It'll stay on all night unless I start and shutdown my PC again and make sure not to bump or move the mouse. Is this intended behavior? How can I fix it? Thanks in advance and I appreciate any help.