Stream prefixes are not respected

[aVikingTrex]

eventstore version: 4.0.0
rustc version: 1.91.0
kurrentdb version: 24.10.4-bookworm-slim (container)

If I set up a client with a subscription against the all stream like so, I am getting events from non-product streams (eg "person-xyz"). Are subscription filters meant to work with regular subscriptions or only persistent ones?

let filter = SubscriptionFilter::on_stream_name().add_prefix("product-").exclude_system_events();

let opts = SubscribeToAllOptions::default()
     .retry_options(retry_opts)
     .position(position)
     .filter(filter);

self.event_store
                    .subscribe_to_all(&opts)
                    .in_current_span()
                    .await

[linear]

DEV-1026

[w1am]

@aVikingTrex The issue is that when you call exclude_system_events(), it sets a regex meant to filter by event type (excluding event types starting with $), but you're applying it to a prefix filter. KurrentDB uses either regex or prefixes, but not both together. If you remove exclude_system_events(), it should work fine.