Only Appear on Map after you shoot/get shot by a Creep

[BeyondLucky]

You can avoid being shown on the map if you only kill creep waves with abilities or items. But the second you shoot at a creep or you get shot by one you'll appear on the map.

This seems like a massive bug/oversight and I was always wondering how some heroes were able to push up to walkers without being on the map.

 

[johannes]

This is how visibility works in deadlock (for now?)
Creeps do not have a radius of line of sight that automatically reveals you on the map. Instead you are only seen when they are attacking you or you are shooting them. Abilities and items do not reveal you. This leads to moments where you can push a wave without being seen on the map.

I'd say it is mostly intended since some abilities and items (for example kudzu bomb or alchemical fire) linger in place. Why should you be visible if you are going somewhere just because you threw an essence bomb on the ground to stop the wave from pushing?
So maybe it is partly an oversight?