Program: 81792
Project: 81792
Buggy source:
public static void modelBakeEvent(ModelBakeEvent event){
  boolean replaceVanillaModels=ConfigCoroUtil.foliageShaders && EventHandler.queryUseOfShaders();
  boolean textureFix=false;
  if (replaceVanillaModels) {
    FoliageData.backupBakedModelStore.clear();
    String str="String_Node_Str";
    CULog.log(str);
    ProgressManager.ProgressBar prog=ProgressManager.push(str,event.getModelRegistry().getKeys().size(),true);
    Map<ModelResourceLocation,IModel> stateModels=ReflectionHelper.getPrivateValue(ModelLoader.class,event.getModelLoader(),"String_Node_Str");
    IBakedModel blank=event.getModelRegistry().getObject(new ModelResourceLocation("String_Node_Str","String_Node_Str"));
    event.getModelLoader().blockModelShapes.reloadModels();
    CULog.dbg("String_Node_Str" + event.getModelLoader().blockModelShapes.bakedModelStore.size());
    for (    Map.Entry<IBlockState,IBakedModel> entry : event.getModelLoader().blockModelShapes.bakedModelStore.entrySet()) {
      IBlockState state=entry.getKey();
      if (state instanceof IExtendedBlockState) {
        state=((IExtendedBlockState)state).getClean();
      }
      FoliageData.backupBakedModelStore.put(state,entry.getValue());
    }
    for (    ModelResourceLocation res : event.getModelRegistry().getKeys()) {
      prog.step(res.toString());
      IBakedModel bakedModel=event.getModelRegistry().getObject(res);
      IModel model=stateModels.get(res);
      if (model != null) {
        try {
          Set<ResourceLocation> textures=Sets.newHashSet(model.getTextures());
          escape:           if (!res.getVariant().equals("String_Node_Str")) {
            for (            FoliageReplacerBase replacer : listFoliageReplacers) {
              for (              TextureAtlasSprite sprite : replacer.sprites) {
                for (                ResourceLocation res2 : textures) {
                  if (res2.toString().equals(sprite.getIconName())) {
                    if (!res.toString().contains("String_Node_Str")) {
                      if (textureFix) {
                        if (blank.getOverrides() instanceof AnimationItemOverrideList) {
                          AnimationItemOverrideList obj1=(AnimationItemOverrideList)blank.getOverrides();
                          IModel model1=ReflectionHelper.getPrivateValue(AnimationItemOverrideList.class,obj1,"String_Node_Str");
                          if (vanillaModelWrapperClass.isAssignableFrom(model1.getClass())) {
                            ModelBlock model2=(ModelBlock)ReflectionHelper.getPrivateValue(vanillaModelWrapperClass,model1,"String_Node_Str");
                            String tex=res2.toString().split("String_Node_Str")[1];
                            model2.textures.put("String_Node_Str",tex);
                          }
                        }
                      }
                      event.getModelRegistry().putObject(res,blank);
                      break escape;
                    }
                  }
                }
              }
            }
          }
        }
 catch (        Exception ex) {
          ex.printStackTrace();
        }
      }
    }
    ProgressManager.pop(prog);
  }
}

Fixed version (ground truth):
public static void modelBakeEvent(ModelBakeEvent event){
  boolean replaceVanillaModels=ConfigCoroUtil.foliageShaders && EventHandler.queryUseOfShaders() && !ConfigMisc.Client_PotatoPC_Mode;
  boolean textureFix=false;
  if (replaceVanillaModels) {
    FoliageData.backupBakedModelStore.clear();
    String str="String_Node_Str";
    CULog.log(str);
    ProgressManager.ProgressBar prog=ProgressManager.push(str,event.getModelRegistry().getKeys().size(),true);
    Map<ModelResourceLocation,IModel> stateModels=ReflectionHelper.getPrivateValue(ModelLoader.class,event.getModelLoader(),"String_Node_Str");
    IBakedModel blank=event.getModelRegistry().getObject(new ModelResourceLocation("String_Node_Str","String_Node_Str"));
    event.getModelLoader().blockModelShapes.reloadModels();
    CULog.dbg("String_Node_Str" + event.getModelLoader().blockModelShapes.bakedModelStore.size());
    for (    Map.Entry<IBlockState,IBakedModel> entry : event.getModelLoader().blockModelShapes.bakedModelStore.entrySet()) {
      IBlockState state=entry.getKey();
      if (state instanceof IExtendedBlockState) {
        state=((IExtendedBlockState)state).getClean();
      }
      FoliageData.backupBakedModelStore.put(state,entry.getValue());
    }
    for (    ModelResourceLocation res : event.getModelRegistry().getKeys()) {
      prog.step(res.toString());
      IBakedModel bakedModel=event.getModelRegistry().getObject(res);
      IModel model=stateModels.get(res);
      if (model != null) {
        try {
          Set<ResourceLocation> textures=Sets.newHashSet(model.getTextures());
          escape:           if (!res.getVariant().equals("String_Node_Str")) {
            for (            FoliageReplacerBase replacer : listFoliageReplacers) {
              for (              TextureAtlasSprite sprite : replacer.sprites) {
                for (                ResourceLocation res2 : textures) {
                  if (res2.toString().equals(sprite.getIconName())) {
                    if (!res.toString().contains("String_Node_Str")) {
                      if (textureFix) {
                        if (blank.getOverrides() instanceof AnimationItemOverrideList) {
                          AnimationItemOverrideList obj1=(AnimationItemOverrideList)blank.getOverrides();
                          IModel model1=ReflectionHelper.getPrivateValue(AnimationItemOverrideList.class,obj1,"String_Node_Str");
                          if (vanillaModelWrapperClass.isAssignableFrom(model1.getClass())) {
                            ModelBlock model2=(ModelBlock)ReflectionHelper.getPrivateValue(vanillaModelWrapperClass,model1,"String_Node_Str");
                            String tex=res2.toString().split("String_Node_Str")[1];
                            model2.textures.put("String_Node_Str",tex);
                          }
                        }
                      }
                      event.getModelRegistry().putObject(res,blank);
                      break escape;
                    }
                  }
                }
              }
            }
          }
        }
 catch (        Exception ex) {
          ex.printStackTrace();
        }
      }
    }
    ProgressManager.pop(prog);
  }
}