QuickEdit broken in console windows

I can't get QuickEdit mode to work in any console window (cmd or TCC). I have QuickEdit Mode checked in Properties and also in Defaults. I can copy and paste using the menu, but I can't select or paste using the mouse. I think this worked at some point in the past, but I don't try it that often, so I can't be sure. The problem is the same if I open cmd from a shortcut, start cmd from the Run box, or do start cmd or start tcc from a tcc tab in Take Command. All the QuickEdit values in the registry under HKCU/Console and its subkeys are set to 1. I'm using Vista Home Premium, version 6.0.6002.

QuickEdit works on my Windows 7 x64 laptop.

Anyone have any suggestions?