This tag is reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug. Please do not use this tag for new questions. Please use the standard bugs header instead of version tags in conjunction with this tag.
A bug is an error/mistake in the software that produces an incorrect or unexpected result or behavior.
This tag will be added to questions about problems that have subsequently been confirmed to be caused by bugs in Mathematica. It should be accompanied by the appropriate version tag. It should not be used when asking new questions. If you know that a certain behavior is a confirmed bug, then please report it to Wolfram Support instead (or e-mail firstname.lastname@example.org).