Which of those Drupal modules that are crucial for almost any project make you want to… pull your hair out? 

For, let’s face it, with all the “improving the developer experience” initiatives in Drupal 8:
 

• BigPipe enabled by default
• the Layout Builder
• Public Media API
• and so on
   

… there still are modules of the “can’t-live-without-type” that are well-known among Drupal 8 developers for the headaches that they cause.

And their drawbacks, with a negative impact on the developer experience, go from: