Not sure if “double shot” is exactly the name of the skill, but it’s the one where you can shoot 2 bullets at once on the same target.
The bug I noticed goes like this: after you use it once in a map with a character, the second time you try to use it with the same character in the same map - it only delivers (and only consumes) one shot. I noticed this in Stalker Trials and it happens with both characters that have the skill.
Hi, it is covered here (and a few other posts). We dont know if it is intended or not but I highly doubt it and consider it a bug until we here something from the devs. @Jens_Erik have the devs shed any light on the matter?