Mapped property "center" of peakinfos has different data types

While implementing a new feature / solving an issue Ive seem to come across an oddity. They Mapped property "center" (for peaks) seem to be sometimes of type double and some other times of type double. Since this information is retrieved via peakInfos() it should be either of type double or deg. I don't want to call it a bug yet - maybe there a reason for this - but it looks like one currently