Ok, thank you, I'll keep updating it.
Confirmed in MC 15w42a.
Confirmed in MC 15w37a.
Confirmed in MC 15w32b.
Confirmed in MC 1.8.3.
Confirmed in MC 1.8.1.
Confirmed in MC 1.8.1-pre2.
I did a check, I confirm changes in controlmap/foliage don't affect the color in mesa and swamp (and birch leaves not affected) in MC 14w34c.
I'm sorry, but the previous screens are taken in 32a. (the data are present). I verified, it does occur in 32a, I added a new legend to explain with this new screen, it's only here to compare.
It's different : the beam is here when the beacon is place in the nether, I clarified : only on the nether ceiling the beam is stopped, at 128 blocks (the previous MC versions let the beam appear on the ceiling).
Confirmed in 14w32a.
Confirmed for Minecraft 14w28b.
Confirmed for MC 14w28b.
Thanks for reporting it, I update.
Confirmed for 14w27a et 14w27b
Confirmed in 14w27a.
I confirm this issue in Minecraft 14w26c (launcher 1.4.4), a lever on a hopper drops when we activate it or with a block update nearby.
@unknown: I added a Resource pack for testing purpose (foliage and grass modified->simple purple), and other pictures.