Reporting issues is always a service for the development team because it helps them to bug chase and identify possible areas for improvement. The problem they face though, as we do, is that five different machines are likely to give the same number of different results. I also think it's somewhat unfair to complain about such things in a system that is new and almost revolutionary in what has been achieved with it. On this basis I advise users to switch to something either more proven by lifespan or inherently more stable out of pedigree, such as Solus OS 1.
On my machine with Cinnamon x64 installed the Software Manager no longer records the percentage progress of a new install, but it does accomplish the job. I also had a couple of occasions when the panel froze while moving things in edit mode and a partial loss of the tops of some fonts and icons. A reboot fixed both.
Overall I am satisfied that for a new system, Cinnamon is a lot more stable than many other distros that are supposedly released to us masses as being "finished".