Hi there ChrussTheTruss,
If location-based automations are not working as expected, we would recommend looking over the following troubleshooting steps since they can resolve unexpected behavior like this.
First, ensure your HomePod is set up as a home hub using the steps outlined here: Set up your HomePod, HomePod mini, Apple TV, or iPad as a home hub
Let's also update all the devices you use with HomeKit and the HomePod itself. These walk you through how to do this:
• Update HomePod
• Update your iPhone or iPad
Lastly, enable the following settings on the primary iOS devices that are used with HomeKit since they are needed for location-based automations:
• Settings > [your name] > Share My Location > From > "This Device"
• Settings > Privacy > Location Services > Home > While Using
• Settings > Privacy > Location Services > System Services > HomeKit > On
If this continues to occur after completing those steps, then Apple Support would be the best equipped to investigate this further. Reach out here: Apple Support
Take care.