Sierra 10.12.4 has had a lot of significant bugs fixed, at last. Here’s a list of those known to remain.
Please post comments adding to this list if you think you have found a bug, so that others can be aware too.
It can be valuable to know how to restart, run a command, and open an app using Terminal, AppleScript, and different methods in the Finder.
This update does fix some old bugs, but here’s a list of those which remain. Updated frequently.
Sierra brings undocumented weirdness to the Finder, with a folder that is, but it isn’t, and improved Finder aliases, which don’t work as well. Yet.
Maximise a List view window in Finder, and it should expand to accommodate the contents. Only sometimes it doesn’t.
A rolling list of bugs which remain in Sierra 10.12.1, including those in Finder and Console.