Upgraded to 14w27b, started building in Creative, could not place signs on signs, went back to 14w25b. Yes, too annoying to tolerate in my opinion. Definitely something to be fixed.
The icon has been changed since 14w25a. Not sure if it's a bug, but it annoys me too because it's now harder to find cobblestone stairs in the inventory as they look really similar to cobblestone walls. I added a picture illustrating this issue.
I also observe this in my survival world in 14w25b.
2 Blah
Not really the case as the jockey I observed was riding the chicken while being at the same level. The pigman's legs were as if it was sitting, but instead of sitting on the chicken it was sitting on the ground.
Sometimes when you look at chests from a certain angle, they are displayed without the lids and you can see them through one another. It happens randomly and disappears randomly too. I did not find a way to reproduce this glitch on purpose.
If it helps, the POV angle is 80, which, as I noticed, sometimes affects such things as item frames not displaying at the edges of the screen (perhaps because for the default POV angle they are considered offscreen and thus are not rendered), or fishing line starting in mid air instead of the fishing rod's end etc.
Awww, man! I expected this issue to be fixed in the newest snapshot. There are several redstone projects on hold because I can't get enough slimeballs. I really hope this issue gets the priority it deserves. BTW, I've been playing 14w20b.
I wonder why my bug report is being ignored.