Typing /placefeature crashes client when connected to a server

The bug

When /placefeature is typed while connected to a server, it crashes the game. The crash is experienced client-side only; the server is unaffected. This may be caused by the client not having direct access to the server's file system.

How to reproduce

1. Start a server

2. Join the server

3. Type /placefeature in chat, followed by a space
   ❌ Crash

Stack trace

[^crash-2022-01-19_23.37.44-client.txt]

Description: charTyped event handler

java.lang.IllegalStateException: Missing registry: ResourceKey[minecraft:root / minecraft:worldgen/configured_feature]
	at gy.f(SourceFile:56)
	at java.base/java.util.Optional.orElseThrow(Optional.java:403)
	at gy.d(SourceFile:56)
	at fw.c(SourceFile:28)
	at com.mojang.brigadier.tree.ArgumentCommandNode.listSuggestions(ArgumentCommandNode.java:71)
	at com.mojang.brigadier.CommandDispatcher.getCompletionSuggestions(CommandDispatcher.java:598)
	at dzj.a(SourceFile:184)
	at ebt.b(SourceFile:80)
	at dzo.d(SourceFile:152)
	at dzo.b(SourceFile:147)
	at dzo.a(SourceFile:358)
	at ead.a(SourceFile:74)
	at dxs.a(SourceFile:458)
	at ecx.a(SourceFile:492)
	at dxs.a(SourceFile:458)
	at dxs.c(SourceFile:473)
	at aum.execute(SourceFile:103)
	at dxs.b(SourceFile:473)
	at org.lwjgl.glfw.GLFWCharModsCallbackI.callback(GLFWCharModsCallbackI.java:39)
	at org.lwjgl.system.JNI.invokeV(Native Method)
	at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3050)
	at com.mojang.blaze3d.systems.RenderSystem.flipFrame(SourceFile:197)
	at dru.e(SourceFile:310)
	at dxu.f(SourceFile:1142)
	at dxu.e(SourceFile:733)
	at net.minecraft.client.main.Main.main(SourceFile:236)