here are some articles about the bugs mentioned and there are zillions of other articles i can link too just took 10 seconds right now to look.
A little while ago, the Linux-headed sleuths over at Phoronix came across an obscure bug in Ryzen CPUs that triggered segmentation faults ("segfaults," which cause application crashes) in a compiler-specific...
techreport.com
AMD has ironed out the big Destiny 2 and Linux bugs affecting Ryzen 3000 CPU users.
www.forbes.com
https://easylinuxtipsproject.blogspot.com/p/bugs.html
Everything indicates that at least for the moment, it is not possible to reach the frequencies promised by AMD in the presentation of this…
cobuildlab.com
I have Ryzen 7 1800X, ASUS Prime X370-PRO, running Fedora 26 and 27. The damn thing has not worked properly since I bought it. My first CPU was RMA'd, and the replacement does not appear to suffer from the SEGV fault. However, both the original and the replacement CPU both crash regularly...
community.amd.com
AMD Confirms Rare Ryzen Linux Anomaly And Fix, EPYC And Threadripper Chips Unaffected
hothardware.com
bbs.archlinux.org
linuxreviews.org
www.phoronix.com
these are all bugs with the ryzen chips, as far as how many i own? i own one threadripper with issues 1950x that was patched 4-6 months later, i run one 2700x, and 2x 3600x. havnt slept in a while and been working but im sure i own more ryzen cpu's then those 4 chips, all of my laptops are intel, all my firewalls are intel, just purchased 2 more mini nuc's (8250u and 9750h) that are intel (i dont know why they dont offer more ryzen nucs a 4700u would have been great)
I love amd and love intel, but people DO purchase intel for less compatibility issues, some software just simply works with intel and doesnt with out patches and work arounds for amd, not the end of the world but im not going to pretend it isnt a thing because it is. (i can make another long winded post about those if you like but now its time for some dinner.