Ctrl+Home hotkey may be used when editing a formula (to go to the formula beginning) or when entering a text comment. Unfortunately from time to time in Anaplan this hotkey leads to Model Map that is loaded for some time. There's alrady an idea posted to disable the Model Map completely. But aside from that even if I use Model Map from time to time this hotkey is not something I would use. Please leave this hotkey for text editing only.