Underscores from window titles are removed in window selector
Because the window selector uses mnemonics when creating menu item labels, underscores in window title labels get replaced as though they were meant for keyboard navigation.
Do we really want/need mnemonic labels in the window selector? It doesn't sounds as they would be desirable in this context, as they would be created by arbitrary window titles and can have duplicate accelerator entries with possibly undefined behavior/precedence.