Windows 7 64bits, nvidia gt540m CUDA 2GB, Intel i7 2GHz, 8GB ram
Broken: 2.75 c6b042b
Short description of error
When i do a search of a shortcut, and then if i want to assign a new value and then cancel, the tab disappear.
Exact steps for others to reproduce the error
Blender User Preferences > Input > Search by key-binding "Ctrl Tab" > Show key map and property of any tab > Clic on "type of event" to change the value > Press Esc to cancel > the tab disappear.