There is bug in Xcode 8 that has not yet been fixed as of Xcode 8.2.1. If you running macOS Sierra you might find that Xcode hangs if you try to open a project, for example via Finder or the open command. The original bug report was filed as rdar://29319747 which mine was closed as a duplicate of.
Our customer found the following issue. In our apps we are showing some sheets for displaying progress to the user (downloading a bunch of images for example). I was not aware that if you ALT + CLICK in macOS ouside your window it gets hidden. When you do this and dismiss the sheet meanwhile an empty sheet remains on top of your window.
This bug is filed as rdar://30071930 and on Open Radar.
There is a bug in Xcode 8.2 that – after upgrading to this version – it is no longer able to build your project. The build error message is:
Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift.
We saw this in projects where we are not using any legacy Swift, i.e. everything is Swift 3. Also there is a project-wide setting to NOT use legacy Swift. The new bug seems to ignore the project-setting.
If you want to be successful in international markets you need to localize your app in as many languages as you can. For iWoman we use POEditor.com. As the number of localization grows it becomes increasingly time-consuming to update all localizations in your Xcode project, let alone deal with plurals which are not supported in the XLIFF format.
Today I am showing off, how I got the update process to be a matter of seconds. I achieved this by writing a POEditor.com API and building a command line tool – I call POET (for POEditor Tool) which greatly simplifies the update process.
We are so foolhardy that we are using NSCollectionView in an internal project that gets widely used by an enterprise client of ours. We found this latest crashing bug while updating the application for macOS 10.12 wich is where the issue first appeared.
The only workaround at this time is to remove animation via animator() and replace it with a reloadData. Thus we vote NSCollectionView for worst Apple API on macOS.
This bug is filed as rdar://28337446 and on Open Radar.
With the prior update to DTFoundation having been 5 months ago, there were two main areas where some tweaks were necessary: support for tvOS and fixing a build error on Xcode 8.