YUI

Raised as a usability problem by 6 people on Hacker News over 4 years (2009–2012), in 5 threads.

People raised many different problems with YUI, but no single problem has yet been raised by 3 people in 3 different months and threads.

Unreviewed issues were grouped by machine: Claude Haiku labelled each comment as a usability complaint, named what it's about and summed up the problem in a line, and a small model grouped similar problems. Nobody has checked them by hand. Expect mistakes.

The newest 6 complaints

Painful to work with; awful syntax and too many components to configure together2012-07-27
Examples are hidden, so learners can't find the live gallery to assess the toolkit2011-08-26
Table UI bugs appear when sortable and resize column features are combined2011-08-26
Documentation is frustrating to navigate and overly complex2010-02-10
Documentation organization made the library hard to learn2009-09-30
Image properties box disappears and takes the image with it2009-08-28