A "production glitch" is essentially an error or mistake that occurs within the production process. However, depending on the context, there are a variety of synonyms that could be used to describe this type of issue. For instance, one could refer to it as a "manufacturing defect", a "processing error", a "product flaw", a "quality control issue", or a "supply chain disruption". Each of these terms may emphasize a slightly different aspect of the problem, such as where in the production process the issue occurred or what the specific consequences might be. Nonetheless, they all refer to the same basic concept of something going wrong during the creation or distribution of a product.