T2 FoW SC question

Well here is the point i have been doing terra 2 with the noob build (gliph of concentration and armor of earth) when i domined this i replaced AoE with heart of shadow and ive already domined that too so now im training to be able to replace GoC getting in save spots etc. I ve watched tons of tutorials and the other day i found A german that comment about a strafe bug in cave the only thing i know is that avoid rupts but i cant found any post or videos that explained that so the question is:

Can anyone explain me what the strafe bug in fow cave is?
one more thing im spanish i have a good english but it will be awesome if u guys use the simplest vocabulary posible

Thx in advance

it isn't a "bug" really, its just being smart.

When you need to cast a new shadow form, you run so that spiders are at longbow (just over 1 aggro circle) away and cast, you can also move sideways just before casting.

Basically it means you are less likely to get rupted because of the distance away and AI's time to respond to your cast.

I dont know why glyph is even on any beginner bars it just makes people rely on it, if you are uncomfortable with casting SF in cave then use the safe spots.

If you drop glyph put finish him in for easier cave wolf/khobay + faster cave

Hope that helps