As discussed in a recent dev journal, a client-only bugfix patch (version 2.46.1) has been released using our new auto-updater. You should be prompted to update next time you load the game. Let me know if you have any trouble using it.

Here is the changelog (which can also be found on our changelogs page):

Bug Fixes

• Fixed a bug that made the team menu disappear if you joined a server and toggled the scoreboard while still looking at the MOTD
  
• Fixed cloak screen effect being drawn while in a slowfield instead of while cloaked
  
• Reverted cl_ragdolltime fix because it caused unexcepted problems; removed the cl_ragdolltime cvar temporarily
  
• Fixed first-person spectator view going insane if the player you're spectating dies while concussed

Also, for anyone that needs or just prefers it, here is an .exe installer for 2.46.1 (to patch from 2.46 to 2.46.1):

• http://www.fortress-forever.com/files/246/FF_2.46.1_Patch.exe