we are seeing some Xcode questions. Some are about the code being written and so are off topic here. However some are about keys to use e.g. here and so are on topic here. However there are more Xcode users on Stack Overflow should we migrate these questions to Stack Overflow?
Broadly speaking Xcode is Apple software so any questions relating to the use of Xcode (key combinations, window handling etc.) clearly are on-topic enough to have a place in AD. There are enough developers hanging out here to help in answering these kind of questions.
This also means that for questions about Xcode usage both SO and AD might be the "right" place to ask. I don't think this will lead to any problems though, it's up to the asker to put the question onto whatever site he prefers (and hopefully not on both at once).
If a question is on-topic here, it remains open. If it is off-topic, it gets closed. On-topic or off-topic, nothing gets migrated unless the OP requests is.
There are a number of questions that would be on-topic at more than one SE site. This is not a bug. If a question is asked here and it is on-topic here, here it is.