Just in case you have never experienced a cursor which jumped all over the page, the experience is like this: You are typing a sentence on your keypad and all of a sudden letters that you were typing in your sentence jumps from their rightful place and ends up somewhere else like the beginning of your sentence, the middle of it or in a previous paragraph. Have you ever experienced this strange phenomenon?
My personal method of alleviating myself of this minor annoyance is by restarting the computer.
I would speculate by saying that it is a flaw within the system since it happens occasionally (By the way, if it was happening regularly, I would still think that it was a flaw within the computer system).
I have never experienced that type of problem with my smartphone. Maybe, I should go back to composing all my posts on my smartphone, because a jumping cursor can be somewhat of a distraction and by the time the computer has restarted, I may have forgotten some of the things that I wanted to write about, or I may lose my zeal entirely for composing a post.