An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include:

• Temporarily limited OS X clients to medium texture quality to resolve random crashes while work is done on a permanent fix
• Fixed a random crash that affected OSX only
• Updated the collision geometry for the turbines in Powerhouse
• Dropped weapons now retain their ammo and ÜberCharge levels unless the player commits suicide
• Valve official quickplay and matchmaking servers are no longer listed in the server browser
• Players no longer drop their weapons in MvM
• Pressing the action key will now try to pick up a dropped weapon before trying to use an item in the action slot
• Spies can no longer pick up weapons when disguised or cloaked
• Using the mouse to select enemy players on the scoreboard no longer improperly reveals their class
• Fixed players dropping multiple instances of the same weapon at once
• Fixed unintended changes to rocket and other explosive jumping behavior
• Fixed dropped weapons occasionally using an incorrect skin
• Fixed an issue that was causing the particle effects on Unusual hats to sometimes draw in first-person for the owner, or not draw at all to others
• Fixed an issue that prevented Huntsman arrows from damaging enemy Engineer buildings
• Fixed weapons with attached models (e.g. Festive weapons, Kritzkrieg, and Botkillers) not rendering their attachments
• Fixed spies that have picked up a dropped Your Eternal Reward or Wanga Prick being able to manually disguise
• Fixed Spy sometimes not being able to use the Disguise Kit after picking up a new Knife
• Fixed newly created items not becoming Strange quality, despite receiving the ability to track kills. Existing items in this state will not be retroactively fixed.
• Fixed skinned weapons appearing differently after being traded or listed on the Steam Community Market. Affected items have been reverted to their original (permanent) appearance.
• Fixed being able to craft some previously un-craftable items
• Fixed a client crash related to Killstreak Fabricators and Chemistry Kits
• Fixed a client crash related to particles
• Fixed the Vitasaw no longer giving its ÜberCharge bonus after death
• Fixed issues related to picking up dropped weapons while zoomed in with a Sniper Rifle
• Fixed a bug that caused the Shortstop to reload faster than normal
• Fixed dropped energy weapons not being able to fire after being picked up
• Fixed some weapons not displaying their charge meters after being picked up
• Fixed the box used in the Box Trot taunt sometimes being the wrong color Steam Community Market
• Fixed skinned items appearing as "Decorated Item"
• Items that are temporarily un-tradable can now properly be listed on the market