During my last print I noticed this jumpy behavior during heat up (blue is bed, red is hotend):
So I am wondering about the jumps. What could cause this? I do not think that it is a defunct sensor (it is in both sensors) and I also don't think it is real. Could this pose some sort of hazard as temperature might not properly be controlled?
I use an Anet A8 printer with Marlin 1.1.9 and Octoprint