Client event runs twice after switching characters

Having an issue with a client event running multiple times after character switches. Server-side I'm only emitting once (confirmed through debug prints), but after switching characters a couple times, I start getting duplicate notifications.

The duplicates keep piling up - first switch gives me 2, second switch gives me 3, etc. Only way to reset it is a full reconnect.

I'm registering the event handler inside the esx:playerLoaded callback since I need it tied to character data:

AddEventHandler('esx:playerLoaded', function(playerData)
    RegisterNetEvent('garage:notify', function(message)
        ESX.ShowNotification(message)
    end)
end)

This is on a multichar server. My gut says the handlers aren't getting cleaned up properly when switching chars, but not sure what the proper approach should be here.