I'm not saying that there were guarantees before, but given the speed of creation of software these days, expect many many many bugs and demotivated maintainers.
It's never the intention of the human or AI to add bugs to the software, but given the murkiness of how software is created where you go through a first version then iteration after iteration in hopes of bug free USEFUL software, well let's just say most AI-assisted or driven software development won't go through this because it's hard to find users.
Software is built to serve a purpose and without that purpose, who cares about your software. Cool, you created it, nice good job. Was it for your use or to serve a growing need? No one cares that your software is faster, the newbies do, but no one serious cares. The problem is solved already, you aren't going to replace entrenched software especially if you only spent a few months trying to re-create complex software that has been battle tested in production. There are always compromises that need to be made and that will slow down your software and slow down productivity.
Better off using AI assistance to help maintain projects you currently use and actually want to make a meaningful contribution to existing users rather than go full greenfield.
No purpose, no long term vision, poof off to the next project with AI assistance. Nice! Another new rehash of an existing project.
Beware