[Warriorrrr]

I've tested these changes and have not found any weird behavior mentioned in the comment, a cross dimension teleport with passengers correctly dismounts them just like /tp or going through a portal would.

This makes things easier for plugins that add passengers to players, as they'll no longer prevent other plugins from teleporting such players, but they're still responsible for removing or re-adding the passengers to the player after a dimension change. This is pretty easily achievable through the EntityDismountEvent & PlayerChangedWorldEvent.

Supersedes #14184
Closes #12093

[masmc05]

but they're still responsible for removing or re-adding the passengers to the player after a dimension change.

Shouldn't this be said a bit more explicitly on both teleports as well as addPassenger that behaviour on players differs from other entities, and on players specifically plugins would need to implement that?

[lynxplay]

100% on the end of masmc here, tho the hopes were that we'd be able to implement cross dimensional teleportation including passengers for players. The teleport transition already has a field to check if the teleport is API introduced so we can guard any non vanilla behaviour there for API calls only.