Which widely-used app is notorious for its poor design?

I personally lean toward an application often recognized for its flawed design, particularly the version that runs on Mac systems. Despite its popularity, many users have noted that its user interface is confusing and inefficient, leading to regular frustrations. Over time, the software has become a topic of debate as its design shortcomings overshadow its intended purpose. I invite others to share if they have encountered similar issues with this or any other app that is widely used but poorly executed.

hey, i notced the same awkward layout on the mac versin. i wonder if its just an outdated approach or a deeper flaw? has anyone figured out a workaround or found a better alternative?