Prior to 1.8 prelease I was able to interact with mobs "sealed" in a glass from all directions (north, south, east, west). In current snapshot, it is possible only from two (east and south). There might be more broader bug connected to that. Providing pictures for better reference (right side of the F3 screen shows which block Iam pointing to - minecraft:glass - in case of sheep there is none.)
MC-70114
Interacting with mobs through glass in certain directions
Resolved
Incomplete
0
Is this still an issue in the current Minecraft Snapshot 15w46a or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.