[GAMEPLAY]Brand Tripple bug (E R Passive )

Can you guys look at these bugs about Brand?

Bug 1 at 0:08 Ulti not bouncing, the passive circle is smaller then the R bounce range as the videos thumbnail shows, it should have hit. Bug 2 at 0:17 Eve is not getting hit by passive, even though Tristana gets hit and both of them are inside of the passive circle Bug 3 at 0:32 E not hitting minions/monsters/champs that just leaves vision but visual and sound clue still triggers also the -70 mana shows up. This could cause the ability to go on CD

Bug 1 seems to be random occurance Bug 2 i wasnt even aware of this, i just realised this when i rewatched the video in slow mow.(could be caits trap a problem? Eve was hit by that ) Bug 3 is quite common and easy to repro, just hit an enemy that leaves vision while the ability is being cast, the sound and visuals go off but no dmg being applied, sometimes goes on CD.

EDIT: R shares the same bug as E does, which is if the target leaves vision during cast time the visual/sound clue triggers but no dmg are applied. Mana/Going on CD MIGHT occures.

Also here is another proof about the ulti bug

https://www.youtube.com/watch?v=ddi4hx2KWhA&feature=youtu.be&t=1601

EDIT Here is my repro of the bug, just spam R and eventually it wont hit or in my case it will hit the target dummy.

https://www.youtube.com/watch?v=MSQOxay47TI

Also i dont know if this is intentional or not, but doing a fast E-Q-W combo(no time between spells other than cast times) does less dmg then if you space it out, and wait a few ticks. Shouldnt the remaning burn dmg(the 4%/spell) applied when the 3 stacks expload?