It didn’t happen on anything else, I went to word and tried it while the keys were messing up on carrara, I even typed up the forum post while the bug was happening. I know what you mean by mashing that is the reason why I try not to use it but it happens. Yes I’m using that dodgy computer, but I have cleaned her up and gave her some new thermal paste and she seems ok.
I have been getting into repairing electronic and I got a hold of my laptop recently and took her apart and cleaned her out, and let me tell you there is such a thing as a dust elephants. I have dusted her out with a can of compressed air back in the day, but I have learned that it shoves it deeper. I also was cautious with her it took me 3 hours to do it so she is ok, and completely cleaned out in ever crevice(she is brand new clean)