/* Add this to your global stylesheet or a relevant CSS file */
.resizing-no-select {
    user-select: none; /* Standard syntax */
    -webkit-user-select: none; /* Safari */
    -ms-user-select: none; /* IE 10+ and Edge */
    pointer-events: none; /* Disable pointer events on children */
}

/* Ensure the resize handle itself remains interactive */
.resizing-no-select #resize-handle-left {    pointer-events: auto;
}