[itsme]

That recalls a discussion we had long ago: imho it is absolutely not necessary to set the starting key manually. The starting key is already specified within the ChordPro file: the setting "Detect Key By" combined with the chords in the file specify the key clearly. If the file contains {key: C} or {meta: key C} that overwrites the result of "Detect Key By".
Why do we need that additional, error-prone and confusing user action?