When in Haze ult, Lucky Shot applies an additional stack of fixation and deals bonus damage whenever it procs (normal behaviour). However, if you ult 2+ people at once, then at any point later in the game upgrade Haze ult to max level (1 additional target hit per shot) and purchase Lucky Shot, solo ults (targetting one person) will apply lucky shot twice (seemingly). Instead of applying 2 stacks it applies 3 stacks, and it deals over 2x damage rather than 1.9x damage (when tested at max fixation stacks, it was 63 damage normally and 150 damage when proccing lucky shot). I tested this in the sandbox by launching the sandbox, spawning a McGinnis next to the training dummy, ulting both of them, purchasing Lucky Shot and upgrading ult to max level, then solo ulting the moving dummy. I also tested dying to the guardian in the sandbox then solo ulting the moving dummy again, and I still applied 3 stacks of fixation instead of 2 and dealt too much damage.