Long text string doesn't wrap

We have a user who has entered a long text string (c.935 characters). This doesn't wrap in the description field so the issue page has a very wide horizontal scroll bar.

The text entered is the equivalent of;

XXXXX,XXXXX,XXXXX,XXXXX,XXXXV,XXXXX,XXXXX,XXXXX,XXXVY,XXXXG,XXXWX,XXXWX,XXXXH,XXXWX,XXXWX,XXXWX,XXXWX,XXXXP,XXXWG,XXXXQ,XXXWH,XXXXX,XXXWJ,XXXXW,XXXYJ,XXXYQ,XXXYX,XXXXJ,XXXXL,XXXXP,XXXXS,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXL,XXXXX,XXXXN,XXXXX,XXXXX,XXXXX,XXXXU,XXXGP,XXXXZ,XXXGQ,XXXXX,XXXGX,XXXXX,XXXGX,XXXGZ,XXXHX,XXXQX,XXXHM,XXXJN,XXXXX,XXXHQ,XXXXH,XXXHU,XXXJX,XXXHW,XXXJZ,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXLX,XXXXX,XXXNX,XXXLN,XXXNX,XXXLQ,XXXNH,XXXNJ,XXXNL,XXXNQ,XXXNS,XXXNZ,XXXPL,XXXPX,XXXPX,XXXPX,XXXQX,XXXQX,XXXQM,XXXQN,XXXQQ,XXXQW,XXXXX,XXXQX,XXXXP,XXXXX,XXXXX,XXXXX,XXXVX,XXXVJ,XXXVL,XXXVX,XXXWP,XXXWW,XXXVV,XXXWY,XXXVW,XXXXX,XXXXX,XXXXX,XXXXH,XXXXX,XXXXL,XXXXN,XXXXX,XXXXZ,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXM,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXX,XXXXS,XXXXW,XXXGX,XXXJX,XXXGX,XXXJX,XXXGX,XXXGN,XXXJX,XXXJX,XXXJX,XXXJX,XXXJX,XXXJX,XXXLX,XXXJX,XXXMX,XXXJL,XXXMX,XXXMX,XXXMX,XXXMX,XXXMP,XXXNX,XXXNX,XXXNX