Blocking vs The Two-Part Attack

Given that Aegis, blocks, and counters are part of high-end gameplay and part of the reason we don't need traditional healing roles...

Why is it that I can block an attack, and still suffer the effect? And I don't mean unblockable attacks, because I see Block come up when it should, but then I get tagged with a status effect (especially Blind, and I have an even number of fingers to show for the blind-spam enemy meta...) due to something I remember as a bit of a rumor, and that is some enemy attacks are done in two parts as a way to convey the effect?

But why? If I mitigate the effect as I should, then the attack should be negated. I don't want to lay it out as a "simple" programming measure, but if-then strings aren't exactly high level, and this is a facet in the combat system that needs to be addressed.

Could i ask where you have this problem? PvE? Pvp? WvW?

I'm sure some skills are designed to be this way, like any two-hit skills (warrior axe 4, for example).Also, if by any chance this is a hidden thief complaint, thieves have access to unblockable blind (shadow shot).

It's also quite possible (and indeed recommended) in PvP to use an auto attack to clear Aegis and then instantly follow that with your "big" attacks.

@Lehrling.1472 said:Could i ask where you have this problem? PvE? Pvp? WvW?

It's something I've seen in a few enemies in PvE. Can't speak to PvP on this one.