Block/Item Maps changing on Single Player World to Server 1.8.9(11.15.1.1724)

[pauljoda]

On forge version 11.15.1.1724 there seems to be an issue with old worlds and servers. I had an old single player world where most of the mods and items had changed, I went to load it and selected no to not load the world and go back to the main menu. Upon joining a server with mods matching the current client, most items and blocks were not the correct ones. Furnaces were glass blocks, copper dust was a thaumcraft harness, things were very shuffled.

It seem like if you choose not to load an old world with outdated worlds in single player, and then join a server that has been updated (maybe even a different single player world) the ids get very messed up.

Just wanted to give you a heads up in case it is something you want to look into. I know its expected to have ids change with mods coming in and out but when it can happen to a client joining an updated world after cancelling loading an old world, that may cause issues

[Flashback083]

Yup, just want confirm this issue, cause i dont see other person which have this bug, but when i load world (1.8) in solo with forge 1.8.9, the mod hasnt the same id :s, i try different thing, the bug is not present in 1.8.8 but pixelmon dont work in 1.8.8.
Thanks for your works <3

[diesieben07]

Is this still an issue? Or fixed by #2477?

[Actuarius]

@diesieben07 added labels [Needs Update]

[stale]

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[stale]

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