Shopify CLI APP_UNINSTALLED webhook not seeing triggered

Hello,
I’m using the latest node version of the Shopify CLI (3.16.2),
I do see that the APP_UNINSTALLED webhook has been registered correctly after running a GraphQL query.
But when I uninstall the app, the webhook doesn’t fire, so nothing gets deleted in my database, I have to manually delete the data from the shopify_sessions table in order to be able to re-install the app.

When I go to my partners app dashboard in Insights > Webhooks, I’m not seeing the app uninstalled webhook in the list of fired webhooks.
What am I missing here?
Is it because the app is installed on a development store? It wouldn’t make sense.
Thanks

Did you implement delete function in the webhook?