Ubuntu is released "ready or not" by a certain date, and any bugs and issues with it are fixed in updates. They come fast and furiously early in any Ubuntu release.
If you're using the latest version of any Ubuntu-based Linux Mint release, you get those updates along with all the Ubuntu users.
That's one of the reasons I never use a release of Ubuntu or Mint when it's brand new. Too often just one of those many updates, intended to fix something, breaks something else. I stick with the LTS versions and wait a few months at least before upgrading to the next LTS.
There's enough of an overlap to give the newest version time to shake out any major issues before the prior LTS reaches the end of its support life. Take advantage of that overlap!