It might be the window being unfocused for whatever reason , if a window opens when it happens , quickly check the windows name and search your computer for that program . If its important , do some googling to see of you can disable it , otherwise delete it . I had this problem a while ago due to a random program opening and closing a command prompt . <| sep |> La circulacin arterial es la que sale a presin , y s , puede salir as a chorritos y es un rojo ms fuerte . <| sep |> close but no cigar , thanks <| sep |> TBH it ' s kinda disrespectful , so it ' s not like there wasn ' t a reason . <| sep |> Omfg how adorable . <| sep |> If I upvote then refresh , it locks in . If I upvote , navigate off the page , then hit back to return to the page , the upvote dissappears . If I upvote , navigate off , then navigate back on , then it locks in . Seems like s bug .