I have some updates on this. I had my car have a full diagnostics at the local dealership (took about an hour for them to do it) and it confirmed a registered error of the "central electronic control unit" /raw translation, not exactly sure which one they meant/. They had the part ordered and got it already replaced last night. I picked up the car this morning and while I had a situation where it could have happened again, so far it looks ok to me..
I'll definitely report back if the issue turns up again. Meanwhile, I recommend the same method to anyone hitting that problem and I really hope it'll stay all fine this time