Factual error: Scout: The description of the Wrap Assassin states that the ornament projectile moves at 90 miles an hour. However it actually moves at around 127.84 miles per hour.
Other mistake: Soldier: Even though a Medic can freely ubercharge a soldier wielding these weapons, the strange part Kills While Ubercharged can not be applied to the Equalizer or the Escape Plan.
Other mistake: Sniper: The strange part Critical Kills can not be put on the Sydney Sleeper rifle, even though it does do min-crit damage.
Other mistake: Demoman: The strange part for Critical Kills can not be applied to the Ullapool Caber, even though it can be crit boosted.
Audio problem: Engineer: Taunt Dueling Banjos: If you view the this taunt in the inventory and inspect it, the music will get stuck in a loop and play forever until you leave the game or use a console command to reset the sound.
Audio problem: Engineer: Taunt Dueling Banjos: Sometimes when using the alt fire or primary fire buttons to change the speed of the Engi playing, will cause the music to stop with only silence. This can be fixed by leaving the taunt and activating it again.
Revealing mistake: Soldier: If the left-handed view models are on, the Soldier's rockets will still be fired from his right shoulder.
Audio problem: Soldier: Shooting with a Soldier weapon followed by a quick weapon switch will result in the sound being cut off. This excludes melee weapons.