SetPlayerRoutingBucket causing "Solo Session" bug

[CsyonDerEchte]

What happened?

I ran into an issue on my test server where a developer and I shared the same bucket, but we couldn't see each other. He couldn't even see his own vehicle from earlier, but I could. It happened completely random.

We use a multicharacter system that places players into their own private bucket during character selection or creation, and then moves them back to bucket 0 (the default bucket) afterward.

Even after forcing him into bucket 0, he remained stuck in another dimension. When debugging his dimension using GetPlayerRoutingBucket, it returned 0, just like mine. So it appeared we were in the same bucket, but clearly we weren't, as he couldn't see me or the vehicles I spawned. The only fix was a relog. It seems this is still an issue that was reported years ago and never resolved: https://forum.cfx.re/t/routingbucket-causing-solo-session/5184416/3

I also asked other server owners who use routing buckets, and they reported experiencing the exact same random issues out of nowhere.

Expected result

The player should be in the bucket I set.

Reproduction steps

1. Set the player in a random bucket (use any bucket other than 0).
2. Set the player back to the default bucket (0).
3. Check if the player can see other players. If neither player can see the other, the bug has occurred.

Importancy

Slight inconvenience

Area(s)

OneSync

Specific version(s)

Client: 33201 Beta / Server fx: b32561/Win

Additional information

No response

[AvarianKnight]

You should generally not use routing buckets for stuff like this, you should use NETWORK_START_SOLO_TUTORIAL_SESSION.

A proper reproduction would typically include something reliable, i.e. "this only happens with no scripts except for this one that sets routing buckets" which doesn't seem like the case here, it's more likely you're hitting GTA Network Kill code, you can check if you hit this by getting the local players source, as it will return something invalid whenever your network session is killed.

[CsyonDerEchte]

@AvarianKnight we also use routing buckets for our ingame whitelist, so players can't access the "real world" before they get whitelisted. But thanks for bringing up NETWORK_START_SOLO_TUTORIAL_SESSION, that would be a much better solution for character creation.

Next time i will check for the players source.