When I was there in the end of April, Splash Mountain broke down while I was on it for about five minutes, and then was closed later in the evening. Pirates didnt close but it got really backed up at the end and we had to wait like 20 minutes to get off.
Didn't notice any issues with Big Thunder, Philair Magic, Monsters Inc (rode twice), Space Mountain, TTA, Buzz Lightyear, Stitch or Haunted Mansion. Tiki Room worked fine too, Jungle Cruise as well although I dont think there's very many actual effects there.
At EPCOT, wonders of life was closed (is this permanent?). Ellen's Energy Adventure I dont think had many dinosaurs moving or anything, but I'm not sure as it was my first time riding. No issues with Spaceship Earth, Mission Space, Test Track, Innoventions, Seas with Nemo, Soarin, Living with Land, Circle of Life, JTI with Figment, Honey I shrunk or Turtle Talk. Only did Malestrom, Gran Fiesta and O Canada in WS and no problems there.
DHS: Only thing I remember was the mist screens at Fantasmic weren't the greatest and the first ten or so rows got soaked. Most of those rows were empty though as it was the later show. No problems with Muppets, Star Tours, Indy, Sounds Dangerous, Backlot Tour, ToT or Rock n Roller. Toy Story and Narnia werent open. AFI was closed and I missed Lights Motors, Mermaid and Great Movie Ride
As I mentioned EE at AK the Yeti was working but I dont think the mountain mist was. I think I was there when the "VIP" was there if I remember reading properly. Dinosaur I didnt notice anything overly out of place. The ride was really bumpy though. (In all honesty, that ride and Men In Black at Universal were the only rides that triggered any motion sickness). The Safari ride was missing out on lots of animals but that cant be controlled. River Rapids seemed to work but it sucked lol. No issues with nemo, Lion King, DinolandUSA, or Tough to be a Bug (although the latter I remember I had to ride twice in DCA because everyone else felt the bee sting and I didnt lol).
In comparison at Universal IOA, lots of the dinos on Jurassic Park didnt work properly & Poseidon's Fury the ending battle seemed mis-timed with the pyro. At Universal, no mist from Donkey on Shrek, Terminator seemed to have a TON of things missing. No movies on the side screens. Some of the live acting was unsynced. Seats didnt jolt back. MIB I was too busy trying not to get sick but I remember a few things that seemed weird. Also Jaws the shark didnt seem to work properly. No issues with Disaster (surprisingly), Jimmy Neutron, the Mummy, Twister, Simpsons or any of the other shows. My brother said ET didnt say their names when they went on.