It is less likely to have. But software can still have bugs, big or small. The difference is just how much testing has to be done before you say it is good enough. Immutable dostros were not immune to KDE 6.0 bugs were if you upgrades from KDE 5 it completely broke. The issue were that you had to clear the cache in the users home folder for KDE. See Chris Titus YouTube channel about this were he did exactly this with Immutable distro.