Changes to the "Server Resource Packs" option when editing a server's options are not saved

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This is happening to a friend of mine and me in 26.3-snapshot-9 too.
I’ve found a workaround using NBTExplorer for now. You can modify the servers.dat file in your .minecraft, and set acceptTextures to 0.

Adding some more context from a duplicate report:

Description

Since 26.3 Snapshot 5 it’s no longer possible to change the Server Pack Status, when editing a server in the multiplayer server list. When editing a server entry the server pack status resets to the previous value after clicking Done.

Steps To Reproduce

1. Add a server (name and address is not relevant)

2. Click “Edit” on the newly added server

3. Change “Server Resource Packs” to something else and click “Done”

4. In the server list click on “Edit” again and observe the “Server Resource Packs” is set back to the initial value

Code Analysis

In 26.3 Snapshot 5 in the JoinMultiplayerScreen#editServerCallback

current.copyFrom(this.editingServer);

has been replaced with

current.setState(ServerData.State.INITIAL);

The IP and name are correctly updated to the current server, but as copyFrom is no longer called the packStatusis not updated.