about 3 years ago - CommunityTeam - Direct link
Hi DiamondNemke,

The bug you're reporting on the Kolto Shell/Trauma Probe of Mercenaries/Commandos is a known issue as stated here: Game Update 6.2.1 - Known Issues.

Players are already discussing this bug in the following thread: [BUG]Passives and Tacticals which increase the amount of stacks of a skill don't work. As this thread is a duplicate one, I am closing this one to avoid
confusion and multiple threads concerning the same subject.