Guard config loader during cache clear

app/models/installation_config.rb

@@ -58,6 +58,8 @@ class InstallationConfig < ApplicationRecord
   end
 
   def clear_cache
+    return if ConfigLoader.processing?
+
     GlobalConfig.clear_cache
   end
 

lib/config_loader.rb

@@ -5,11 +5,12 @@ class ConfigLoader
   }.freeze
 
   def self.processing?
-    Thread.current[:config_loader_processing]
+    Thread.current[:config_loader_processing] || @processing
   end
 
   def self.processing=(value)
     Thread.current[:config_loader_processing] = value
+    @processing = value
   end
 
   def process(options = {})