Redis cache not updating after model touch

Here is my code in ProductCategory model:

  has_many :products  def products_count    Rails.cache.fetch([cache_key, __method__]) do      products.count    end  end

In Product model:

belongs_to :product_category, touch: true

Once I create a new product I can see from the log the updated_at field being updated:

ProductCategory Update (2.6ms) UPDATE "product_categories" SET"updated_at" = $1 WHERE "product_categories"."id" = $2[["updated_at", "2021-08-04 15:34:55.520408"], ["id", 7]] (1.7ms)COMMIT

Still:

ProductCategory.find(7).products_count // returns 0ProductCategory.find(7).products.count // returns 1

If I execute Rails.cache.clear the results match so I guess Redis not regenerating cache after touch?