New Sidekicks (Pet System) Causing Island-Wide Crashes Back to Lobby

Summary

Players are reporting that the new Sidekicks/Pets system is causing the entire island session to crash and return everyone to the lobby. I am currently unable to debug the issue due to limited crash visibility within the Creator Portal.

Description:
Since deploying the new Sidekicks (Pets) feature on my island, multiple players have reported a full session crash that sends all players back to the lobby. This happens intermittently, often shortly after spawning or interacting with the Sidekick system.

Important detail:

Sidekicks are visible to all players (not just the owner). This is intended, but I’m unsure if the replication/visibility load is contributing to the crash.

I am unable to identify the root cause because:

No Verse errors are shown in the logs.

Creator Portal does not surface lobby crash data – I can’t see when or why players are being ejected.

There is no crash output in UEFN related to Sidekick spawns, visibility, replication, behaviors, or abilities.

Because of this lack of visibility, I’m unsure how to debug the problem from my side.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Island Settings

Steps to Reproduce

VERY HARD TO REPRODUCE.

Join the island.

Spawn or equip a Sidekick/Pet.

Play for a short period.

Entire lobby is returned to main lobby unexpectedly.

Expected Result

Sidekicks operate normally without impacting server stability.

Observed Result

Full island crash back to lobby for every player in the session.

Platform(s)

All

Island Code

3589-2124-6433

Additional Notes

Please investigate this as a possible server-side or runtime issue related to Sidekicks or replicated visibility. Also, any additional insight into lobby crash logs or debugging tools on Creator Portal would be extremely helpful.

FORT-1016500 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.