Is this a Bug? Not sure. Also, a definite Bug (Ashe)

Sometimes when I am attacking with Ashe, an enemy either walks into a bush or walks away from me and my attack gets cancelled! but other times, they walk into a bush or flash away from me and even tho I would expect my attack to be cancelled (even without the prior noted - like there's no way my attack should still go through) my attack still goes through xD

it is inconsistent, and I expect consistency. I have only noticed this when playing Ashe, however I mostly play Ashe. I am very familiar with her attack animation, and I wonder if this is something which is newly occurring within the past month or two - that it seems as if sometimes her attacks are getting cancelled when all that has happened (no further input, no effects from any ability) is that the target has either walked away from me, or has walked into a bush. and yes - this also happens sometimes, during moments when her attack should have already been completed, that if normally I would click a move command the attack would still go through, but even this late, the attack gets cancelled.

It strikes me as possible that this is occurring since the change to ranger's focus where it is no longer a complete auto reset. I am not sure on that regard.

The second bug which I know is a bug and isn't me not fully understanding how auto cancelling works, like this is for Sure a bug, is with her Ranger's Focus ability. at the End of its buff duration, often the attack gets cancelled no matter what the situation is - just because the ability duration has ended. I have even had two occurrences where I hadn't attacked in two attack-lengths of time - that is, that normally I try to issue the attack command as soon as she could attack, but in these occurances I had waited at least twice that long if not longer - and also, I happened to purposefully Not input any further commands to be sure I didn't cancel an auto, and yet her auto got cancelled. this only happened twice, with this specific of inputs, but the cancelling in general happens much more frequently than that, that at the end of the Q - Ranger's Focus duration, attacks that have been started but not yet completed often get cancelled.

I would very much appreciate if this bug is addressed :) And also, if I could hear from someone about if that other thing which might be a bug, is one or is just me not fully understanding auto mechanics :)