You might be familiar with the scenario. Months of hard work, sprint after sprint, features and bug fixing, and now your project is ready to be deployed. The countdown starts at the same time that the nail-biting, and then… the site is up and running.
Everything looks good, no 404s, 500s, etc. Just when I was ready to relax, I noticed that there was something weird, the header menu was not showing at all!