Warcraft III: Reforged
Bugs, missing features from the original, features promised but never delivered. People were so upset with it there was Blizzard started offering refunds.
While it didn't live up to what was promised from Blizzard, I think it visually is an improvement over the original. I bought the original WC3 and then the FT expansion back when they launched and loved the game. Played it on my 2001 iBook.
WC3:Reforged is still missing stuff, and is still buggy at times, and is much more locked down, but I much prefer the graphical improvements compared to the old version.