I do not think there are many problems, although these can occur in connections, grub, heating, speed, slowness, etc. etc.
Also obviously patches that run a lot of hardware.
Another chance to test my odd “laptop won’t go to sleep if connected to power” issue which came with a kernel upgrade earlier this year and hopefully goes away with another one.
Another issue which crept in recently and which I haven’t managed to resolve is a “nVidia GPU falling off the bus” which requires a reboot before I can use the GPU.