If you select a couple of methods (incl. overloaded methods) and try to copy and paste them into a new project (using right click or menu, short cuts don’t work anyway), not all overloaded methods get copied, just one each. Known bug? Haven’t found anything in Feedback.
There seem to be more bugs with overloaded methods: Right clicking on the parent item in the navigator and selecting “delete” will just delete one. Afterwards, when deleting the remaining method, the IDE crashes. This only happens for copied&pasted overloaded methods…
The Navigator’s handling of overloaded methods is completely braindead, as far as I’m concerned (for example, feedback://showreport?report_id=27249 and feedback://showreport?report_id=27430, but these aren’t the bugs you’re looking for.)
The closest matching bug report I could find was this one: feedback://showreport?report_id=26907