Armor Penetration: Now works for melee weapons (excluding unarmed attacks.)
Concealment: No longer overrides the magazine perks from Va'ruun scriptures or interferes with Void Form. Void Form, Concealment and Chameleon will seamlessly switch between their effects, with Void Form taking priority. (Note: Chameleon is probably not supposed to stack with itself, but the players love it. I can provide a fix if you want to risk the ire of the playerbase.)
Lasers: No longer affects particle weapons. (Expect complaints.)
Leadership: Fixed a bug that caused ranks 2-4 to only provide +15% companion affinity gain instead of +25%.
Martial Arts: Now properly adds a flat +15% crit chance to unarmed attacks instead of multiplying your base 5% crit chance by 1.15. Ranks 3-4 also have a 15% chance to disarm as intended. (Was 5%)
Particle Beams: Now properly adds a flat +5% crit chance, instead of multiplying your base 5% crit chance by 1.05.
Pistol Certification: Now properly adds a flat +25% crit chance for 5 seconds after killing an enemy, instead of multiplying your base 5% crit chance by 1.25.
Rapid Reloading: Now works while throwables are equipped.
Rejuvenation: Fixed health regeneration in combat not working. Ranks 3 and 4 now allow you to regenerate health half as fast in combat, which is what the developers intended. (Overwrite the fix from v0.0.1, this fix is better.)
Shield Systems: Can no longer increase shields beyond the intended amount. (The bug where it reduces shields is still present, see the sticky post on Skill Fixes for a comprehensive explanation.)
Targeting: Fixed a bug that made the increased weapon range not take effect at rank 3 only.
Targeting Control Systems: Now properly adds a flat +10% crit chance at rank 4
Cellular Regeneration: Rank 4 now lists that it further increases the recovery chance.
Decontamination: Rank 4 now lists that it further increases the recovery chance.
Gunslinger's Guide and Mining Monthly magazine perks no longer count toward the skill total for the Combat tree.
Automated Weapon Systems, it appears to work for all weapons even though it's only supposed to work for turrets.