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# 2.2.5 Beta 5 - Development Snapshot > ⚠️ **DEVELOPMENT SNAPSHOT — not ready for production.** Features are still in development and things may break. **Back up your worlds before using this build.** ## Fixes ### World generation & chunks - **Deleted chunks can no longer be regenerated by any spawner**: the deleted-but-marked protection from the previous snapshot was silently inert: it relied on a session-only flag that was never populated in the overworld and reset on every restart, so erased chunks could be rebuilt by *any* spawner block. Spawn records are now **persisted per world** (and survive restarts), and the spawner path hard-refuses deleted chunks. The **World Mender** remains the only tool that can rebuild them. - **Sealed-world spawner error cascade fixed**: using a Chunk Spawner in a sealed world no longer fails with "No empty adjacent chunks to expand into" followed by a raw untranslated `invalid_level_or_generator` message. Unspawned sealed chunks are classified as empty again, so expansion from your own chunk works normally; deleted chunks in sealed worlds now produce a single clear message instead of the cascade. - **Flowing water no longer survives chunk regeneration**: erased chunks containing waterfalls, rivers or roofed water columns regenerate cleanly instead of leaving floating water columns/waterfalls and water-filled holes going straight up to the void. Lava falls included. *(Carried over from the previous snapshot's known issues.)* - **Themed start no longer dominates the world** — plain Chunk Spawners / Unstable Chunk Spawners now generate the world's real seed-based biomes instead of inheriting the initial theme. Already-affected saves are repaired automatically on load (no NBT surgery needed). - **Sky/void dimensions now use real noise settings** — a new mixin (`NoiseSettingsFixMixin`) replaces the vanilla dummy noise settings the sky generator was inheriting, fixing broken terrain behavior in sky worlds. - **`/locate` no longer hangs** — structure searches in the sky dimension are now redirected to the dimension's effective generation level. - **Structure data is now copied with gathered chunks** — spawned chunks carry their structure starts over from the generation dimension (improves structures actually existing where they should). - **Origin chunk protection** — spawner blocks can no longer regenerate the deleted-but-marked origin chunk (World Mender remains the intended tool); sealed-world spawn logic also treats `Sealed` generation correctly. ### Config - **`initial_chunk_biomes` now persists** — the biome selector writes to and reads from the central config (`config/GatheringChunks/gatheringchunks.toml`), including the dedicated-server path (config sync now serializes lists). New `ListFieldMetadata` in the config system. - **Config screen labels fixed** — the GUI now resolves `config.gatheringchunks.*` lang keys instead of the stale `config.chunkbychunk.*` prefix (labels were silently falling back to raw keys). ### World Mender - **Dormancy fix** — a mender that finds nothing to generate no longer sleeps for ~16 in-game hours. New option **`emptyRescanInterval`** (1–1200000 ticks, default **600 = 30 s**) controls how often dormant menders re-scan; set `1200000` to reproduce the old behavior. Old saves with a large saved `Cooldown` drain it once first. ### Spawner blocks - **New refusal message for deleted chunks**: attempting to spawn into a deleted-but-marked chunk now shows: *"This chunk was already spawned and later erased. Only the World Mender can regenerate it."* (English for now; zh_cn falls back to English until translated.) ### Nether - Restored vanilla **Nether coordinate scale 8** (was incorrectly `1`, so compass/coordinates were off). ### Chunk overwrite & ores - New **`ChunkResourceTracker`** (persisted per-world) tracks which chunks have been gathered and which ore positions were harvested — on overwrite, un-mined ore is preserved and mined ores are turned into Stones/Deepslate depending on depth. Preventing "Infinite Ore" Glitches. ## New features - **Dev Mode** — new `/gatheringchunks devmode [on|off]` (OP) toggles verbose debug logging and unlocks debug subcommands. - **`/gatheringchunks debug chunk [x] [z]`** (OP) — compares visible vs. generation dimension state at a chunk, for diagnosing spawn/generation mismatches. - **`/gatheringchunks config list [search]`** (OP) — list config fields and current values, with filtering. - **`/gatheringchunks config set <field> <value>`** (OP) — set a config value from chat and save it. - **`/gatheringchunksdev`** (client-only) — toggles a version watermark HUD. - **Perf guard** — chunk copying logs a `[Perf]` warning when a copy pass takes >200 ms. - **Themed spawner source option** — `ThemedSpawnerSource` config: `DIRECT` (default) or `RANDOM` source chunk for themed spawners.