# ActiveHash model
class Course < ActiveHash::Base
  self.data = [
    { id: 1, name: "Course A" },
    { id: 2, name: "Course B" },
    { id: 3, name: "Course C" }
  ]
end

# Reproduction code
courses = Course.all
courses.conditions  #=> Conditions(@conditions=[])

courses.find_by(id: 1)  #=> #<Course id: 1, name: "Course A"> ✅ Works
courses.conditions  #=> Conditions(@conditions=[Condition(id: 1)]) ← Mutated!

courses.find_by(id: 2)  #=> nil ❌ Should return #<Course id: 2>
courses.conditions  #=> Conditions(@conditions=[Condition(id: 1), Condition(id: 2)])

courses.find_by(id: 1)  #=> nil ❌ Was working before!
courses.all  #=> [] ❌ Empty

courses = Course.all
courses.find_by(id: 1)  #=> #<Course id: 1>
courses.find_by(id: 2)  #=> #<Course id: 2>
courses.find_by(id: 1)  #=> #<Course id: 1>
courses.conditions  #=> Conditions(@conditions=[]) ← Should remain empty

def spawn
  self.class.new(klass, all_records, conditions, order_values)
end

# config/initializers/active_hash_patch.rb

module ActiveHashConditionsPatch
  def deep_dup
    self.class.new(conditions.dup)
  end
end

ActiveHash::Relation::Conditions.prepend(ActiveHashConditionsPatch)

module ActiveHashRelationPatch
  def spawn
    self.class.new(klass, all_records, conditions.deep_dup, order_values.dup)
  end
end

ActiveHash::Relation.prepend(ActiveHashRelationPatch)