[Gameplay] Blitzcrank pull bugs in Patch 5.4

Champions affected (that I've seen):

Description of the problem: I was playing on Summoner's Rift with Blitzcrank and I noticed that sometimes Blitz's Rocket Grab (Q), would fail to pull people. Specifically, the issue happened twice on Leona as she was using her Eclipse (W) skill. If the pull hit Leona while the skill explodes, the pull would be negated but the damage would be done.

The second bug happened when Blitz is close to a wall. Before, a pull from behind a wall would pull the champion across the well in front of Blitzcrank. This time, the pull brought the champion to the wall, but would not bring them through to the opposite side of the wall. To illustrate my point, I have the following picture: http://i.gyazo.com/9567511afe1f977bcb8675edef33a5b7.png

Blitzcrank was at point 1 and Wukong was at point 2. Usually the successful pull would have brought Wukong to point 1 but in this case it stopped him at point 3.