"CornerCasting" is it legal? serious only please

[Ducket]

So I didn't know this existed until today and it seemed like a pretty broken mechanic in my eyes.

Is it allowed in pvp without any penalty by gm's?

Is it something that is known and just can't be fixed because of issues with the code?

Intended: yes? no?

I'd like some clarification on this please.

I'm fairly new to red and I guess around level 50 is when I'm going to have to learn all the ins and outs of pvp and the shadiness/abuse of mechanics.