The comment about design features working only in the designer's context definitely rang a bell for me. The most common one for me is the section containing jus

The comment about design features working only in the designer's context definitely rang a bell for me. The most common one for me is the section containing just enough space for the designer's sample text, which is conveniently very small. Fast-forward to the moment the design gets actually coded up, and we've got ellipsified text all over the place.