devtrackers.gg
After getting bonus armor by Headache talent, while equipping 4 pieces of Hotshot, temporary bonus armor by other talents becomes permanent.
In this clip, I use "My Home Is My Castle" talent of Sharpshooter. This talent give us bonus armor while in cover.
But due to this bug, bonus armor is not lost when leaving cover and can be stacked up to the amount gained from Headache talent.