diff --git a/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java b/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
index d7b505c2..2c9ed884 100644
--- a/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
+++ b/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
@@ -158,6 +158,9 @@ public class ModernFixEarlyConfig {
 
         this.scanForAndBuildMixinOptions();
         mixinOptions.addAll(DEFAULT_SETTING_OVERRIDES.keySet());
+        if(!isFabric) {
+            mixinOptions.add("mixin.bugfix.fix_config_crashes");
+        }
         for(String optionName : mixinOptions) {
             boolean defaultEnabled = DEFAULT_SETTING_OVERRIDES.getOrDefault(optionName, true);
             this.options.putIfAbsent(optionName, new Option(optionName, defaultEnabled, false));
diff --git a/common/src/main/java/org/embeddedt/modernfix/util/CanonizingStringMap.java b/common/src/main/java/org/embeddedt/modernfix/util/CanonizingStringMap.java
index 1202500b..352492b1 100644
--- a/common/src/main/java/org/embeddedt/modernfix/util/CanonizingStringMap.java
+++ b/common/src/main/java/org/embeddedt/modernfix/util/CanonizingStringMap.java
@@ -1,157 +1,46 @@
 package org.embeddedt.modernfix.util;
 
+import com.google.common.base.Function;
 import com.google.common.collect.Interner;
 import com.google.common.collect.Interners;
-import it.unimi.dsi.fastutil.objects.*;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
+import com.google.common.collect.Maps;
 
-import java.util.*;
-import java.util.function.Function;
+import java.util.HashMap;
+import java.util.Map;
 
 /**
- * Replacement backing map for CompoundTags. Uses an array map for tags with 4 or less entries,
- * and a hash map for larger tags.
+ * Replacement backing map for CompoundTags that interns keys.
  */
-public class CanonizingStringMap<T> implements Map<String, T> {
-    private Object2ObjectMap<String, T> backingMap;
-
-    private static final int GROWTH_THRESHOLD = 4;
+public class CanonizingStringMap<T> extends HashMap<String, T> {
     private static final Interner<String> KEY_INTERNER = Interners.newStrongInterner();
 
+    private static String intern(String key) {
+        return key != null ? KEY_INTERNER.intern(key) : null;
+    }
+
     public CanonizingStringMap() {
-        this(new Object2ObjectArrayMap<>());
-    }
-
-    protected CanonizingStringMap(Object2ObjectMap<String, T> newMap) {
-        this.backingMap = newMap;
+        super();
     }
 
     @Override
-    public int size() {
-        return backingMap.size();
+    public T put(String key, T value) {
+        return super.put(intern(key), value);
     }
 
     @Override
-    public boolean isEmpty() {
-        return backingMap.isEmpty();
+    public void putAll(Map<? extends String, ? extends T> m) {
+        HashMap<String, T> tmp = new HashMap<>();
+        m.forEach((k, v) -> tmp.put(intern(k), v));
+        super.putAll(tmp);
     }
 
-    @Override
-    public boolean containsKey(Object o) {
-        return backingMap.containsKey(o);
+    private void putAllWithoutInterning(Map<? extends String, ? extends T> m) {
+        super.putAll(m);
     }
 
-    @Override
-    public boolean containsValue(Object o) {
-        return backingMap.containsValue(o);
-    }
-
-    @Override
-    public T get(Object o) {
-        return backingMap.get(o);
-    }
-
-    @Nullable
-    @Override
-    public T put(String s, T t) {
-        if(backingMap.size() >= GROWTH_THRESHOLD && !(backingMap instanceof Object2ObjectOpenHashMap) && !backingMap.containsKey(s)) {
-            // map will grow to GROWTH_THRESHOLD + 1 entries, change to hashmap
-            backingMap = new Object2ObjectOpenHashMap<>(backingMap);
-        }
-        s = KEY_INTERNER.intern(s);
-        return backingMap.put(s, t);
-    }
-
-    @Override
-    public T remove(Object o) {
-        T value = backingMap.remove(o);
-        // need to shrink to be consistent with new maps
-        if(backingMap.size() <= GROWTH_THRESHOLD && backingMap instanceof Object2ObjectOpenHashMap) {
-            backingMap = new Object2ObjectArrayMap<>(backingMap);
-        }
-        return value;
-    }
-
-    @Override
-    public void putAll(@NotNull Map<? extends String, ? extends T> map) {
-        if(map.size() == 0)
-            return;
-        // grow early if we know there are enough non-overlapping keys
-        if((map.size() - backingMap.size()) > GROWTH_THRESHOLD && !(backingMap instanceof Object2ObjectOpenHashMap)) {
-            backingMap = new Object2ObjectOpenHashMap<>(backingMap);
-        }
-        map.forEach((String key, T val) -> {
-            key = KEY_INTERNER.intern(key);
-            backingMap.put(key, val);
-        });
-        // if it's still an array, and now too big, grow it
-        if(backingMap.size() > GROWTH_THRESHOLD && !(backingMap instanceof Object2ObjectOpenHashMap)) {
-            backingMap = new Object2ObjectOpenHashMap<>(backingMap);
-        }
-    }
-
-    @Override
-    public void clear() {
-        if(!(this.backingMap instanceof Object2ObjectArrayMap))
-            this.backingMap = new Object2ObjectArrayMap<>();
-        else
-            this.backingMap.clear();
-    }
-
-    @NotNull
-    @Override
-    public Set<String> keySet() {
-        // has to be modifiable because mods (cough, Tinkers) use it to clear the tag
-        return this.backingMap.keySet();
-    }
-
-    @NotNull
-    @Override
-    public Collection<T> values() {
-        return Collections.unmodifiableCollection(this.backingMap.values());
-    }
-
-    @NotNull
-    @Override
-    public Set<Entry<String, T>> entrySet() {
-        return Collections.unmodifiableSet(this.backingMap.entrySet());
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        CanonizingStringMap<?> that = (CanonizingStringMap<?>)o;
-        if(that.backingMap.size() != backingMap.size())
-            return false;
-        return backingMap.object2ObjectEntrySet().containsAll(that.backingMap.object2ObjectEntrySet());
-    }
-
-    /**
-     * We deliberately use a hashcode that will be consistent regardless of underlying map type.
-     */
-    @Override
-    public int hashCode() {
-        final ObjectIterator<Object2ObjectMap.Entry<String, T>> i = Object2ObjectMaps.fastIterator(backingMap);
-        int h = 0, n = backingMap.size();
-        while (n-- != 0)
-            h += i.next().hashCode();
-        return h;
-    }
-
-    public static <T> CanonizingStringMap<T> deepCopy(CanonizingStringMap<T> inputMap, Function<T, T> deepCopier) {
-        Objects.requireNonNull(deepCopier);
-        Object2ObjectMap<String, T> copiedBackingMap;
-        int size = inputMap.backingMap.size();
-        if(size > GROWTH_THRESHOLD) {
-            copiedBackingMap = new Object2ObjectOpenHashMap<>(size);
-        } else
-            copiedBackingMap = new Object2ObjectArrayMap<>(size);
-        inputMap.backingMap.object2ObjectEntrySet().forEach(entry -> {
-            if(entry.getKey() != null && entry.getValue() != null)
-                copiedBackingMap.put(entry.getKey(), deepCopier.apply(entry.getValue()));
-        });
-        return new CanonizingStringMap<>(copiedBackingMap);
+    public static <T> CanonizingStringMap<T> deepCopy(CanonizingStringMap<T> incomingMap, Function<T, T> deepCopier) {
+        CanonizingStringMap<T> newMap = new CanonizingStringMap<>();
+        newMap.putAllWithoutInterning(Maps.transformValues(incomingMap, deepCopier));
+        return newMap;
     }
 }
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/config/ConfigFixer.java b/forge/src/main/java/org/embeddedt/modernfix/forge/config/ConfigFixer.java
new file mode 100644
index 00000000..fb7e0f71
--- /dev/null
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/config/ConfigFixer.java
@@ -0,0 +1,56 @@
+package org.embeddedt.modernfix.forge.config;
+
+import net.minecraftforge.fml.ModContainer;
+import net.minecraftforge.fml.ModList;
+import net.minecraftforge.fml.common.ObfuscationReflectionHelper;
+import net.minecraftforge.fml.config.ModConfig;
+import org.embeddedt.modernfix.ModernFix;
+import org.embeddedt.modernfix.core.ModernFixMixinPlugin;
+
+import java.util.Optional;
+import java.util.function.Consumer;
+
+public class ConfigFixer {
+    /**
+     * To prevent mods from crashing if their ModConfigEvent is invoked by Night Config's watch thread and Forge
+     * at the same time, wrap their config handler so that it only executes the event in serial for that mod.
+     *
+     * Should have no noticeable performance impact as config handlers are virtually instant.
+     */
+    public static void replaceConfigHandlers() {
+        if(!ModernFixMixinPlugin.instance.isOptionEnabled("bugfix.fix_config_crashes.ConfigFixerMixin"))
+            return;
+        ModList.get().forEachModContainer((id, container) -> {
+            try {
+                Optional<Consumer<ModConfig.ModConfigEvent>> configOpt = ObfuscationReflectionHelper.getPrivateValue(ModContainer.class, container, "configHandler");
+                if(configOpt.isPresent()) {
+                    ObfuscationReflectionHelper.setPrivateValue(ModContainer.class, container, Optional.of(new LockingConfigHandler(id, configOpt.get())), "configHandler");
+                }
+            } catch(RuntimeException e) {
+                ModernFix.LOGGER.error("Error replacing config handler", e);
+            }
+        });
+    }
+
+    private static class LockingConfigHandler implements Consumer<ModConfig.ModConfigEvent> {
+        private final Consumer<ModConfig.ModConfigEvent> actualHandler;
+        private final String modId;
+
+        LockingConfigHandler(String id, Consumer<ModConfig.ModConfigEvent> actualHandler) {
+            this.modId = id;
+            this.actualHandler = actualHandler;
+        }
+
+        @Override
+        public void accept(ModConfig.ModConfigEvent modConfigEvent) {
+            synchronized (this) {
+                this.actualHandler.accept(modConfigEvent);
+            }
+        }
+
+        @Override
+        public String toString() {
+            return "LockingConfigHandler{id=" + modId + "}";
+        }
+    }
+}
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/init/ModernFixForge.java b/forge/src/main/java/org/embeddedt/modernfix/forge/init/ModernFixForge.java
index e96181b2..1c443c2b 100644
--- a/forge/src/main/java/org/embeddedt/modernfix/forge/init/ModernFixForge.java
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/init/ModernFixForge.java
@@ -24,6 +24,7 @@ import org.embeddedt.modernfix.forge.classloading.ClassLoadHack;
 import org.embeddedt.modernfix.forge.classloading.ModFileScanDataDeduplicator;
 import org.embeddedt.modernfix.forge.ModernFixConfig;
 import org.embeddedt.modernfix.entity.EntityDataIDSyncHandler;
+import org.embeddedt.modernfix.forge.config.ConfigFixer;
 import org.embeddedt.modernfix.forge.packet.PacketHandler;
 import org.embeddedt.modernfix.forge.registry.ObjectHolderClearer;
 
@@ -44,6 +45,7 @@ public class ModernFixForge {
         PacketHandler.register();
         ModFileScanDataDeduplicator.deduplicate();
         ClassLoadHack.loadModClasses();
+        ConfigFixer.replaceConfigHandlers();
     }
 
     @SubscribeEvent
diff --git a/scripts/autorelease.sh b/scripts/autorelease.sh
index bf338308..508143b5 100755
--- a/scripts/autorelease.sh
+++ b/scripts/autorelease.sh
@@ -27,6 +27,8 @@ do_release() {
     echo "we think the current tag is $(git describe --tags --abbrev=0)"
     echo "the current commit head is $(git rev-parse HEAD)"
     read -p "new tag name: " tag_name
+    git tag -a $tag_name -m "$tag_name"
+    git push --tags
     gh release create $tag_name --target $1 --title "$tag_name" --notes ""
 }
 
diff --git a/scripts/propagate.sh b/scripts/propagate.sh
index 23b8a6a0..86bc3968 100755
--- a/scripts/propagate.sh
+++ b/scripts/propagate.sh
@@ -47,6 +47,7 @@ for version in "${all_versions[@]}"; do
             read -rs -n1
         fi
         if (git add . && git commit -m "Merge $our_version into $version" &>/dev/null); then
+            echo
             git push -u origin propagations/$version:$version &>/dev/null
         else
             echo -e "\b\b\b\bnothing to merge"