dodging red circles and rectangles etc?

hello,

I have been browsing various forums and I cannot tell if this is really a bug or not. as far as I can tell some people experience this 'bug', and some do not.

my problem is that oftentimes when I see a red circle on the ground (or rectangle etc) I understand it to mean that damage will soon hit that area and I need to move. so I move well out of the area, then I see the animation and hear the explosion etc and I take full damage.

there seem to be a lot of posts about this subject and I am trying to find out if it is working as intended?

thank you for any information