On error pages, when scroll is needed, the scrollbars are displayed but inactives.
The browser window scrolls instead of the wanted container (see screenshot).

Due to the following the css style :

/kernel/resources/css/error/error.css (line 58)

.top-panel .details-place {
    border:1px solid #1C58A0;
    overflow:scroll;
    text-align:left;
    white-space:pre;
}