Hopefully there is more granular details than this, I see quite a few things missing related to items specifically. Tagging u/BioCamden as this is your kinda party :)
• Fist of the Crucible - Colossus Flamethrower gear - has {modifier} tags in place of the actual values.
• Soothing Touch - MW Anvil Marksman Rifle - When the stability bonus reaches 3 stacks the gun stops dealing damage (seems to cause bullets to shoot miles to the right of the reticule at 3 stacks)
• Grenadier Component - Ranger - All rarities - The 35% reduced cooldown on Grenades does not work at all. (Infact it appears to increase cooldown by 1sec on Grenades)
• Avenging Herald - MW Blastback Pistol - The "Raptor's Deadeye" effect when hovering, stacks x2 if you equip the same gun in each weapon slot (creating a 400% weapon boost while hovering) Sorry everyone - Also the buff disappears if you cancel hover and reactive hover before reaching the ground. You then need to ground yourself, jump and reactive hover to get the buff back.
• Insult and Injury - MW Grenade Launcher - The grenades don't explode on impact with an enemy and have a massive timer, like 15secs+ so its effectively impossible to deal damage with this gun.
• Token of Daring - MW Storm Component - It gives the Amulet of Winter buff icon on the UI when active. (not sure if it gives the wrong actual bonus though - should be +seal dmg when breaking a shield)
• Gunslingers Mark - MW Storm Component - Multiple instances of this buff can appear, such as having 3-4 instances of the buff displayed on your UI and they appear to be applying multiples of the bonus leading to outrageous damage on weak points. Also the buff disappears if you cancel hover and reactive hover before reaching the ground. You then need to ground yourself, jump and reactive hover to get the buff back.
Thats all I can think of for now, but overall Inscriptions and Components need a major pass for clean up. Its really dumb getting the same inscriptions multiple times on a gear piece, like +shield 3 times on an item is outrageous. But its even more busted when an item has multiple entries of +gun/gear damage in the 100's of %.